NSA307110
TECHNICAL
SPECIFICATION
FLUID - HYDRAULIC
PHOSPHATE ESTER - BASE
Issue :
M
Date :
Mar 04
Page :
1/51
FIRE RESISTANT
SUMMARY
1 - SCOPE AND FIELD OF APPLICATION
2 - REFERENCES
3 - TECHNICAL REQUIREMENTS
4 - QUALIFICATION REQUIREMENTS
5 - BATCHES
6 - QUALITY CONTROL
7 - RECOMMENDED LIMITS
8 - MARKING
9 - PACKING AND STORAGE
AMENDMENT RECORD SHEET
1 -
SCOPE AND FIELD OF APPLICATION
This specification :
- defines technical requirements, qualification and quality control conditions (product
qualification, batch control, acceptance) and test and measurement methods to be used by
manufacturers of fire-resistant phosphate-ester-base fluids used for hydraulic transmissions.
- is applicable to all new hydraulic fluids. Quality control requirements are only applicable to
manufacturers of previously qualified fluids. Test methods and associated meas urement
methods are applicable to all manufacturer's laboratories.
The content of this document is the property of AIRBUS FRANCE. It is supplied in confidence and commercial security on its contents must be
maintained. It must not be used for any purpose other than that for which it is supplied nor may information contained in it be disclosed to
unauthorized persons. It must not be reproduced in whole or in part without permission in writing from AIRBUS FRANCE.
AIRBUS FRANCE Trade Secrets or Commercial or Financial information, 5 U.S.C. (b) (4).
 AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
2
2 -
REFERENCES
Applicable standards for the technical qualification requirements specified in section 4 are listed in
APPENDIX A1. "Equivalent" standards are listed in APPENDIX A2.
Note : the latest issue of these documents shall apply, unless specified otherwise.
3 -
TECHNICAL REQUIREMENTS
3.1 -
The product shall be a fire-resistant, phosphate-ester-base fluid for hydraulic
transmissions.
Its chemical composition (additives, contaminants) and intrinsic physical and chemical
properties shall be in strict compliance with the requirements of this specification.
The manufacturer shall guarantee the continuing availability of the hydraulic fluid.
Delivered product must be of the same quality as the qualified product and its composition
shall not be modified without AIRBUS FR prior agreement.
All delivered hydraulic fluids must be fully compatible with any other ester phosphate base
fluid already qualified, whatever the mixture proportions (Refer to APPENDIX E1).
3.2 -
Types of fluids : fluids covered by this specification are listed in the table below with their
corresponding properties and in APPENDIX E1, in keeping with High Density fluid limitation
of use.
Table 1
Type of fluid
IV
“HD”
(High Density)
“LD”
V
3.3 -
(Low Density)
Fluid properties
“Fire resistance” very high + Low “Toxicity”
- High “Viscosity” at low temperature condition and high “ Density”
inducing some Airbus limitation of use (See APPENDIX E1)
“Fire resistant”+ “Density” reduced + "Dry” (low H2O content)
+ "High thermal stability" + “Improved anti-erosion"
“Fire resistant” + “Density” reduced + "Dry” (low H2O content)
+ "Improved thermal stability" + “Improved anti-erosion and inservice lifetime"
Physical and chemical properties : the main physical and chemical properties of the fluid
covered by this specification are listed in the Table 2 - Technical data sheet below.
3.4 -
Qualified manufacturers and products : as per APPENDIX E1.
3.5 -
Certified laboratories : manufacturer's laboratories must be ISO certified and evaluated by
AIRBUS FR (Quality Department)
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
3
Table 2 - Technical data sheet NSA307110 hydraulic fluid
Property
Unit
Condition
Symbol
Absolute
kinematic
viscosity
2
-1
mm .s
(centiStoke)
"ν"
Requirements
TYPE IV
-54 °C/-65 °F
+38 °C/+100 °F
+99 °C/+210 °F
TYPE V
HD : ≤ 2 900
LD : ≤ 2 000
LD : ≤ 2 000
∈ [9.00 ; 12.50]
∈ [3.00 ; 4.00]
Water
content
% mass
≤ 0,20
H2O
-3
kg.m
Density
(+23 ± 3) °C
990 to 1 066
970 to 1 020
"ρ"
mg KOH
Acidity index per g of fluid
≤ 0.15
≤ 0.10
"Al"
-1
Electrical
µS.cm
≥ 0.30
conductivity
"γ"
Cl
Tot.chlorine
Chemical
≤ 50
≤ 30
-6
content
p.p.m.
p.p.m. = parts per million 10
Pour point
≤ -62 / -80
temperature
Flash point
≥ +160 / +320
temperature
°C / °F
Fire point
≥ +177 / +350
temperature
Auto-ignition
≥ +400 / +752
temperature
Cycles
Ignition test on a pipe-cleaner ≥ 25
Flammability
Points
Ignition test under pressure kh ≥ 10
Points
Ignition test on a hot element km ≥ 10
Colour
Purple
condition
Clear appearance
Adiabatic
+25 to
5
Pa
≥ 14 500.10
bulk modulus
+120 °C
of elasticity
-1
Thermal
°C
+25 to
-3
≤ 1.10
expansion
+99 °C
"α"
Solid particle
pollution
Class
NF L 41-101
≤7
(counting °)
Gravimetric
for
mg
Not specified
≤1
3
analysis
100 cm
Filterability
"FI"
∈ [1.00 ; 1.60]
Index
After 5 min
Persistence
3
+24 °C
≤ 250
≤ 100 sec.
Foaming
cm
+93 °C
≤ 150
≤ 50 sec.
+24 °C
≤ 450
≤ 250 sec.
AIRBUS FRANCE 2004. All rights reserved
Test method(s)
EN Ref.
Other
ISO 3104
ASTM
D 445
ISO 12937
ISO 3675
ISO 6618
ASTM
D 6304
ASTM
D 1298
ASTM
D 974
§
4.1
4.2
4.3
4.4
4.5
NSA307110
4.6
ISO 3016
ASTM D
97
4.7
ISO 2592
ASTM D
92
4.8
NSA307110
4.9
NSA307110
4.10
NSA307110
4.11
NSA307110
4.12
ASTM
D 941
NF
L 41-102
ASTM
D 1217
ARP / AS
598
ARP 785
NSA307110
ISO
6247
4.13
ASTM
D 892
4.16
App
D1
4.17
NSA307110
Issue :
Mar 04
Page :
4
4 -
QUALIFICATION REQUIREMENTS
The fluid must undergo the two qualification stages below, in the order indicated.
The manufacturer shall perform preliminary tests, as defined contractually, and submit test reports
to AIRBUS FR. These reports shall describe test results and methods applied, and indicate test
laboratories used (under GIE EADS CCR check).
AIRBUS FR reserves the right to perform all or part of preliminary tests itself, on samples of the
fluid to be qualified that the manufacturer shall supply to AIRBUS FR on request.
Preliminary stage : Characterization of the fluid (chapter 4.1 to chapter 4.22)
4.1 -
Absolute kinematic viscosity "ν" of the fluid shall be determined at the temperatures
indicated below using UBBELOHDE-type viscosimetric capillary tubes in accordance with
standard ISO 3104 (ASTM D 445).
2
-1
Values, in mm .s (centiStokes) shall be :
Table 3
Temperatures
Type
(°C)
(°F)
IV High Density (HD)
IV & V Low Density (LD)
-54
-65
ν ≤ 2 900
ν ≤ 2 000
+38
+100
9.00 ≤ ν ≤ 12.50
+99
+210
3.00 ≤ ν ≤ 4.00
Measurements shall be taken in a thermostatic bath at temperatures accurate to ± 0,5 °C,
controlled using a contacting thermometer also accurate to ± 0,5 °C. At low temperatures,
viscosimetric tubes shall be connected to dehydration tubes to avoid condensation forming
inside.
4.2 -
Water content shall be determined :
- using the electrochemical method " KARL FISCHER " in compliance with standard
ISO 12937 (ASTM D 6304),
- by turn back of a solvent mixture (4 volumes of Chloroform/1 volume of Methanol) slightly
3
hydrated with 5 mg of H2O per cm of mixture.
The water content, in % mass, shall be (all fluids) : ≤ 0.20
4.3 -
Density "ρ" shall be determined at (+23 ± 3) °C in compliance with standard ISO 3675
(ASTM D 1298).
-3
Values, in kg.m , shall be :
Type IV High Density HD : 990 to 1 066
Type IV & V Low Density LD : 970 to 1 020
AIRBUS FRANCE 2004. All rights reserved
NSA307110
4.4 -
Issue :
Mar 04
Page :
5
Acidity index "AI" (all fluid types)
The acidity or alkalinity of the fluid shall be determined using the colour indicator titration
method in accordance with standard NF ISO 6618 (ASTM D 974).
The acidity index values obtained, in mg KOH per gramme of fluid shall be :
Type IV : AI ≤ 0.15 and Type V : Al ≤ 0.10
4.5 -
Electrical conductivity "γ" (all fluids)
Test equipment :
- cell immersed in hydraulic fluid,
- impedance bridge (conductimeter).
Measurement conditions : - frequency 50 Hz,
- temperature = (+23 ± 3) °C,
- cell constant K ∈ [0,7 ; 1,2] cm.
Electrical resistance "R" shall be measured across the terminals of the cell.
Resistivity shall be calculated according to the relation :
-1
ρ = R.S.L = K.R
where
R = Resistance in Ohms (Ω)
-1
K = Cell constant in cm = S.L
S = Surface area of electrodes in cm
2
L = gap between electrodes in cm
Whence the electrical conductivity :
γ=ρ
-1
-1
The corrected value in µS.cm , for a temperature of (+20 ± 0,5 °C), shall be (all fluids) :
γ ≥ 0.30
-6
-6
-1
-6
(µS = microSiemens = 10 Siemens = 10 Ω = 10 Mho)
4.6 -
-1
-6
Chemical content (all fluids), in p.p.m. (parts per million) or µg.g (10 ) as Calcium,
Potassium, Sulphur, Sodium shall be duly identified when these elements are formulation
additives and their fluid limit concentration shall be determined by fluid manufacturers.
All other additives not dully identified in the fluid manufacturer formulation will be
considered as contaminant and consequently prohibited, except total chlorine when its
concentration is:
TYPE IV: [Cl ] ≤ 50 p.p.m. ; TYPE V : [Cl ] ≤ 30 p.p.m.
To determine the total chlorine concentration, the hydraulic fluid shall be diluted 50/50 in
acetone. The test quantity, (25 to 50 µl according to the chlorine content), shall be injected
with a microsyringe into an oven at +1 050 °C to mineralise it by combustion in an oxygen
current. The chlorine, converted into chloride ions and conveyed by the oxygen shall
bubble into a microcell containing an electrolyte composed of isopropanol (300 ml), acetic
acid (20 ml), nitric acid (2 ml) and water (1 ml). Titration shall be by precipitation of silver
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
6
+
ions (Ag ). The coulometric dose shall by potentiometric titration using a silver / mercury
sulphate electrode (calomel electrode).
4.7 -
Pour point temperature (all fluids) shall be determined in compliance with standard
NF ISO 3016 (ASTM D 97-93).
Temperature shall be :
POUR POINT : ≤ -62 °C / -80 °F
4.8 -
Flash point and fire point temperatures in an open vessel (all fluids) shall be determined
using the CLEVELAND method in compliance with standard ISO 2592 (ASTM D 92-90).
Temperatures shall be :
FLASH POINT : ≥ +160 °C / +320 °F
FIRE POINT : ≥ +177 °C / +350 °F
4.9 -
Auto-ignition temperature (all fluids) shall be determined in compliance with method given
hereafter.Temperature shall be :
AUTO-IGNITION : ≥ +400 °C / +752 °F
4.9.1 -
Scope
4.9.1.1 -
This method covers the determination of the auto-ignition temperature
of a liquid or semiliquid petroleum product in air at one atmosphere
pressure using hypodermic syringe injection.
4.9.1.2 -
This standard should be used solely to measure and describe the
properties of materials, products, or systems in response to heat and
flame under controlled laboratory conditions and should not be
considered or used for the description, appraisal, or regulation of the
fire hazard materials, products, or systems under actual fire conditions.
4.9.2 -
Summary of method
4.9.2.1 -
A small metered sample of the product to be tested is injected with a
hypodermic syringe into a heated 200 ml Erlenmeyer borosilicate glass
flask containing air. The contents of the flask are observed in a
darkened room for 5 min following injection of the sample or until autoignition occurs; auto-ignition is evidenced by the sudden appearance of
a flame inside the flask. The lowest flask temperature at which autoignition occurs for a series of prescribed sample volumes is taken to be
the auto-ignition temperature of the petroleum product in air at one
atmosphere pressure.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
4.9.3 -
Issue :
Mar 04
Page :
7
Apparatus
4.9.3.1 -
The apparatus, shown schematically in figures APPENDICES B1 and
B2 shall conform to the requirements prescribed in paragraphs 4.9.3.2
to 4.9.3.6 hereafter.
4.9.3.2 -
Furnace
The furnace shall consist of a 5 inches (127 mm) internal diameter
alundum cylinder, 5 inches long, circumferentially wound with an
electric heater, a Transite cover ring neck heater, three-neck heater
supports, Transite flask guide ring, base heater, and suitable refractory
insulating material and retaining shell. Temperature control shall be
achieved by the use of suitable autotransformers or rheostats,
thermocouples, and a suitable potentiometer.
4.9.3.3 -
Hypodermic Syringe
3
A 0,25 or 1 cm hypodermic syringe equipped with a 2 inches (50,8
mm) No. 18 stainless steel needle and calibrated in units of 0,01 cm
3
should be used to inject the sample into the heated test flask.
4.9.3.4 -
Test Flask
The test flask shall be a commercial 200 ml Erlenmeyer borosilicate
glass flask. A new flask shall be used for tests on each product ; should
the flask become visibly coated with residue before the completion of
tests on each product, the final series of tests should be conducted with
a new flask.
4.9.3.5 -
Thermocouples
Three calibrated 20 - gage iron-constantan thermocouples shall be
used in determining the flask temperature. These shall be mounted in
the furnace so as to contact the walls of the flask 1 and 2 inches
(25 to 51 mm) below the bottom of the neck heater and under the base
of the flask near its centre.
4.9.3.6 -
Timer
An electric timer or stopwatch calibrated in 0,1 or 0,2 s intervals shall be
used to determine the time lag before ignition (time interval between the
instant of sample injection and that of ignition as evidenced by the
appearance of the flame).
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
8
4.9.4 -
Procedure
4.9.4.1 -
Temperature Control
Adjust the temperature of the furnace so that the temperatures at the
top, centre, and bottom of the 200 ml Erlenmeyer test flask are within
2 F (1.1 C) of the desired test temperature.
4.9.4.2 -
Sample Injection
3
Inject 0,07 cm of the sample to be tested into the test flask with the
hypodermic syringe ; quickly withdraw the syringe.
4.9.4.3 -
Time Measurement
Start the timer as the sample is injected into the test flask.
4.9.4.4 -
Observations
Observe the inside of the test flask in a darkened room by means of a
mirror placed at an appropriate angle above the flask. If a flame is not
observed in 5 min, the volume of the sample tested is considered nonflammable at the temperature of the test flask. Completely flush the
flask with clean dry air and stop the timer. Then repeat the test at a
higher (about 50 F or 30 C) temperature. Allow at least 15 min to elapse
between tests. If a flame is observed, stop the timer and record the time
interval between the sample injection and the appearance of the flame
to the nearest 0,2 s as the time lag.
Lower the test temperature by 5 F (3 C) and repeat the entire procedure
until auto-ignition is no longer obtained. Then raise the test temperature
3
about 50 F and repeat the above procedure using 0,10 cm of the
sample. If the lowest temperature at which auto-ignition is obtained with
3
this quantity of sample (0,10 cm ) is lower than that found in the
3
previous test, repeat the procedure again using 0,12, then 0,15 cm ,
3
etc…, of the sample in 0,02 to 0,03 cm steps until the minimum autoignition temperature is obtained. If the lowest temperature at which
3
auto-ignition is obtained with 0,10 cm of the sample is greater than that
3
obtained with 0,07 cm of the sample, repeat the above procedure with
3
3
0,05 then 0,03 cm instead of 0,12, 0,15 cm , etc…
4.9.4.5 -
Auto-ignition : auto-ignition is usually evidenced in these tests by the
appearance of a yellow or blue flame. However, pale blue, white, red,
and mixed colour flames may be obtained in some cases.
4.9.4.6 -
Data : record the test temperature, pressure, quantity of sample used,
and time lag before ignition. A plot of the ignition temperature against
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
9
time lag before ignition may be used to determine the auto-ignition
temperature, if desired.
4.9.5 -
Report
4.9.5.1 -
Report as the auto-ignition temperature the lowest flask temperature at
which auto-ignition was obtained, rounded to the nearest 5 F (3 C) ;
report the corresponding time lag before ignition and barometric
pressure as the time lag and pressure, respectively.
4.9.6 -
Precision
4.9.6.1 -
The following criteria should be used for judging the acceptability of
results (95 % confidence).
4.9.6.1.1 - Repeatability
Duplicate results by the same operator should be considered
suspect if they differ by more than 5 below +600 °F (+316 °C)
and by more than 10 above +600 °F (+316 °C).
4.9.6.1.2 - Reproducibility
The result submitted by each of two laboratories should be
considered suspect if the two results differ by more than 20
below +600 °F (+316 °C) and by more than 40 above +600 °F
(+316 °C).
4.10 -
Flammability test (all fluids)
4.10.1 - Ignition test on a "pipe cleaner"
This consists of in constructing a device as shown in APPENDIX C1 to move an
ordinary pipe-cleaner fixed horizontally in the flame of a BUNSEN burner back
and forth at a given frequency, preferably 30 to 40 cycles per minute.
Cut about 50 mm off the pipe-cleaner and soak it in the test fluid, letting the
excess drain away. Install the pipe-cleaner in the apparatus in such a way that
the outside end describes a radius R of approximately 102 mm.
Adjust the BUNSEN burner to give a quantity of air sufficient to obtain a nonluminous flame of approximately 100 mm in height but not too much more, in
order to form a sharply inward curving cone.
Control the back and forth movements of the pipe-cleaner in such a way that the
centre of the 50 mm length is at the centre of the flame at the end of the cycle
and count the number of cycles until the flame is self-maintained.
Value shall be :
≥ 25 cycles
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
10
4.10.2 - Ignition test under pressure
APPENDIX C2 represents a diagram of the test equipment. The equipment is
5
comprised of a nitrogen tank used to apply a pressure of (70 ± 3).10 Pa to the
test fluid, a hydraulic cylinder (jack) and the obligatory valves and pressure
gauges.
A sharp-edged steel nozzle with an aperture of 0,4 mm in diameter and a
thickness of 1,6 mm is used to spray the fluid.
The hydraulic cylinder (jack) shall be filled with the test fluid at +20 °C to +25 °C
5
and a pressure of (70 ± 3 ).10 Pa applied. The spray valve shall then be opened
at its aperture and an attempt made to light the fluid spray at a point between 40
and 300 mm away using an oxyacetylene blowtorch adjusted to give a neutral
flame.
5
The pressure is maintained momentarily at (70 ± 3).10 Pa and the results noted
as Table 4 :
Table 4
Before lighting
a) does not ignite
b) difficult to ignite
c) fast to ignite
Pt
a
b1
b2
c1
c2
After lighting
Points
self-extinguishing
steady flame
self-extinguishing
steady flame
+20
+15
+5
+5
0
kh
a or b or c
≥ 10
4.10.3 - Ignition test on a hot element
A diagram of the test equipment is shown on APPENDIX C3. The equipment is
comprised of a heating element simulating a pipe or exhaust head installed in a
protector. Solder a thermocouple opposite the steel rod and then insulate the
solder to avoid possible errors of temperature readout. Insert a heating element
measuring 790 mm x 305 mm x 25,4 mm with an electrical resistance of 0,633 Ω
into the tube and make the necessary electrical connections.
Adjust the electrical voltage of the resistor to give a tube temperature of
(+700 ± 5) °C.
Clean the tube prior or each series of tests using steel wool or a sand-blasting
process.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
11
3
Carefully pour 10 cm of test fluid into the tube (simulating the exhaust pipe) in
less than 40 seconds and note the results as in Table below :
Table 5
Fluid poured on
a) on the tube
b) on the bottom of the protector
4.11 -
Pt
Appreciation
Points
a
burns
does not burn
burns
lights up
does not burn
0
+15
0
+5
+10
b
km
a+b
≥ 10
Colour - Condition
The new fluid shall be of a purple colour which shall not significantly alter during use in
normal conditions of temperatures (-40 °C to +110 °C), or in the presence of air.
New fluid shall be clear and homogeneous without any solid suspended matter.
The colour and condition of the new fluid shall be inspected under white light shone
through a glass test tube approximately 45 mm in diameter, filled with fluid.
Note : fluid colour change can be accepted after use.
4.12 -
Adiabatic Bulk Modulus (modulus of volume elasticity)
The Adiabatic Bulk Modulus (reciprocal of the coefficient of compressibility), which
characterizes fluid compression, shall be determined using a method and set-up in
accordance with hydraulic system requirements.
A possible method would be to determine the speed of sound "C" by measuring the time
required by an ultrasonic signal to cover a distance measured in the fluid at a required
temperature and pressure and also the density "ρ" of the fluid in the same conditions of
temperature and pressure.
In this case, the Adiabatic Bulk Modulus will be calculated in Pa by the relationship :
2
Ea = ρ x C
where
ρ = density in kg.m
-3
C = speed of sound in the fluid in m.s
-1
5
The Adiabatic Bulk Modulus, at a pressure of 210 x 10 Pa and for the temperatures range
(+25 ; +50 ; +80 ; +100 ; +120) °C, whatever the fluid type, shall be :
5
Ea ≥ 14 500 x 10 Pa
4.13 -
Thermal expansion coefficient "α" (all fluids) shall be determined in compliance with the
method described in ASTM D 941 or ASTM D 1217.
-1
Value, in °C , between +25 °C and +99 °C, shall be (all fluids) :
-3
α ≤ 1 x 10
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
12
4.14 -
Dielectric resistance (all fluids) shall be determined in compliance with the method
ASTM D 877.
The manufacturer shall indicate the value measured on the test fluid.
4.15 -
Specific heat (all fluids) shall be determined in compliance with the method ASTM D 2766.
The manufacturer shall indicate the value measured on the test fluid.
4.16 -
Solid particle contamination (Cleanliness Class determination by microscopic counting)
Note : by reason of the chemical nature of this type of hydraulic fluid, filtering membranes
compatible with phosphate esters (PA 6.6, PTFE, POM,...) with a pore dimension
of 1 µm will be used with trichlorethylene filtered at 1 µm as a solvent.
4.16.1 - Counting degree shall be determined in compliance with the method described in
NF L 41-102 (ARP 598).
3
The particles shall be counted by filtering 100 cm of fluid using a filter of the type
described above, divided into 100 equal squares, under reflected light as follows :
- For particles > 50 µm in dimension and fibres, a global count is made over the
entire surface of the filter magnified by 40.
- For particles of ∈ ] 15 ; 50 ] µm in dimension, a count is made over 10 squares
3
magnified by 100 ; this is multiplied by 10 to obtain the count for 100 cm of
fluid.
- For particles of ∈ [ 5 ; 15 ] µm in dimension, a count is made over 10 surfaces
2
of 1,5 mm magnified by 100 ; this is multiplied by 64 to obtain the count for
3
100 cm of fluid.
3
Table 6 - Number of particles per 100 cm of fluid / Class
Particle size (µm)
New Fluid
Before A/C delivery
Aged Fluid
[ 5 ; 15 ]
≤ 32 000
≤ 64 000
≤ 128 000
] 15 ; 25 ]
≤ 5 700
≤ 11 400
≤ 22 800
] 25 ; 50 ]
≤ 1 012
≤ 2 024
≤ 4 050
] 50 ; 100 ]
≤ 180
≤ 360
≤ 720
> 100 (including fibres - see Note below)
≤ 32
≤ 64
≤ 128
Cleanliness Class NF L 41-101
≤7
≤8
≤9
(Refer to Appendix D1)
Note : as an indication, a "fibre" is a particle with a length over 100 µm and a ratio length / width of 10
4.16.2 - Gravimetric analysis (all fluids) shall be determined in compliance with the
method NF L 41-102 (ARP 785).
Value shall be :
3
≤ 1 mg for 100 cm of fluid
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
13
4.16.3 - Filterability index "FI" (all fluids)
Note : Filterability index, which is dimensionless, is not strictly an intrinsic physical
property of the fluid but rather a means of gauging its hydraulic behaviour.
The hereafter method, with a repeatability of 5 %, consists in comparing
the flow rate under constant pressure of a fluid through different filters,
during the test.
Test equipment (See Testing Installation in APPENDIX D2):
- PTFE filtering membranes welded to a polyethylene grid, pore
dimension 1µm, Ø = 47 mm - (MILLIPORE/Type FA/Ref. FALP 047FI),
- timing device.
Test conditions : constant filtering pressure.
Record the flow times, in seconds, for each volume of fluid, i.e. :
t
50,
t 100 , t 200 , t 300,
Calculate filterability index using the following formula :
FI =
t300 − t200
2(t 100 − t50 )
The value must be :
1.00 ≤ FI ≤ 1.60
4.17 -
Foaming (all fluids) : a foaming test shall be performed in accordance with standard
ISO 6247 (ASTM D 892) on a first test sample at +24 °C, then on a second test sample at
+93 °C and at +24 °C once the foam has disappeared.
Test equipment : bubbling apparatus (approx. 5 minutes).
4.17.1 - Tendency to foam :
- After bubbling the first sample for 5 minutes at +24 °C, the volume of foam shall
3
be ≤ 250 cm .
- After bubbling the second sample at +93 °C, the volume of foam shall
3
3
be ≤ 150 cm , then ≤ 450 cm after bubbling at +24 °C.
4.17.2 - Foam persistence :
- No foam must remain after allowing the first sample of fluid bubbled at +24 °C
to stand for 100 seconds.
- No foam must remain after allowing the second sample bubbled at +93 °C to
stand for 50 seconds ; no foam must remain at +24 °C after 250 seconds.
Foam volumes and persistence values must not exceed those indicated in Table
below.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
14
Table 7
Sample
Temperature
(°C)
Tendency to foam
3
(cm )
Foam persistence
time
(s)
First
+24
≤ 250
≤ 100
+93
≤ 150
≤ 50
+24
≤ 450
≤ 250
Second
4.18 -
Toxicity (all fluids)
The manufacturer must specify the toxicity characteristics of the hydraulic fluid :
a)
The fluid must contain no ingredient of an unknown degree of toxicity and no mixture
of ingredients liable to constitute a health hazard when the fluid is used in accordance
with instructions.
Drainage of fluid residues should entail no difficulties.
b)
All fluids submitted to qualification tests will be accompanied by a toxicological report
drawn up by an approved laboratory or a laboratory able to provide references proving
its competence in the field of toxicology.
The following information on toxicity will be given :
b1 -
product concentration dangerous in short exposure.
b2 -
intense exposure limited to 15 minutes.
b3 -
continual exposure (with a limit of 8 hours for daily exposure at normal
temperatures and pressures).
b4 -
c)
as applicable, any other information relating to safety or hygiene.
All studies on toxicity must be sufficiently detailed to enable easy elimination of the
toxic effects of the fluid.
If this type of study has already appeared in current publications considered as highly
qualified in this field, the articles concerned may be quoted instead of a report on the
studies themselves.
The MSDS (Material Safety Data Sheet) giving the names and quantities of chemical
products contained in the product must be provided whatever the case.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
4.19 -
Issue :
Mar 04
Page :
15
Stabilities (all fluids)
4.19.1 - Shear stability using a sonic oscillator shall be determined in compliance with the
ASTM D 2603 test method.
After testing, the absolute kinematic viscosity of the fluid shall be measured at
+38 °C as indicated in paragraph 4.1 above.
The value measured shall not vary by more than 25 % with respect to that
obtained with a new fluid, also at +38 °C.
4.19.2 - Thermal, corrosion and oxidation stability : The fluid shall be tested after
immersion of test pieces assembled in accordance with in Figure 1 below.
3
Mg
2 holes Ø 1,5
25
Steel
Al
Cadmium-plated steel
Dimensions in mm.
25
Cu
Figure 1 - Arrangement of test pieces
Polished test samples : electrolytic copper (99,9 %), non-plated 2024 aluminium,
G-A3Z1 magnesium and XC18S steel.
Polished test pieces : cadmium-plated steel (7 to 12 µm plating) without chrome
finish (white).
Tests shall be performed on metal plates after immersion in the fluid. The
magnesium, aluminium, copper and steel test pieces shall be placed so that they
form a diamond, and the cadmium-plated steel test piece placed diagonally,
keeping strictly to the order indicated. The edges around the holes of the test
pieces may be touching, but the magnesium test piece must not touch the copper
piece under any circumstances in order to avoid galvanic coupling. The test piece
assembly shall be held in place by threads that are not affected by phosphate
esters (polyamide 6.6, flax fibre, etc.).
At the end of each immersion cycle indicated in paragraph 4.19.2.1 and at the
end of 4.19.2.2, in addition to the physical and chemical characteristics of the
unfiltered fluid, the metals in contact with the fluid shall be examined for
corrosion, and the fluid's oxidation resistance determined.
Metal plates shall be examined for corrosion after removing any traces of grease,
and their corrosion stability determined by measuring the variation in mass in
-2
mg.cm . No pitting, corrosion attacks or discoloration must be visible on the
surface of the metals when examined at a magnification of 20.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
16
The fluid's oxidation resistance shall be determined by identifying variations in its
viscosimetric properties, acidity index, visual appearance (precipitation of
insoluble substances, gumming, turbidity, etc.) and discoloration.
Fluid loss through evaporation shall not exceed :
≤ 8 % in weight
Absolute kinematic viscosity measured as defined in paragraph 4.1 above must
not deviate from the value measured on new fluid by more than :
2
-1
2
-1
± 3,00 mm .s maxi at +38 °C
± 1,00 mm .s maxi at +99 °C
The acidity index per gram of fluid, measured as defined in paragraph 4.4 above,
shall be :
AI ≤ 0.5 mg KOH
The test conditions will be specified subsequently.
4.19.2.1 - Thermal stability (all TYPE of fluid - “dry” condition i.e. [H2O] = 1000 p.p.m.
maxi)
Test samples : flasks containing one litre of fluid in delivery condition,
unfiltered and divided into equal quantities in glass flasks, in the
presence of air. The flasks shall be sealed with a tapered, ground glass
stopper.
Test cycles :
. (+135 ± 5) °C Maxi Temperature depending to formula disassociation
. (0 ; 150 ; 300 ; 600 ; 1 000 ; 1 500) hours.
Test flasks shall be exposed to dry heat and cycled as indicated above,
according to the type of fluid. After each artificial ageing cycle, the
absolute kinematic viscosity (see paragraph. 4.1), water content (see
paragraph. 4.2) and acidity index (see paragraph 4.4) shall be
determined.
4.19.2.2 - Corrosion and oxidation stability
Test shall be performed in accordance with standard AIR 1651 for
168 hours at (+80 ± 1) °C temperature.
The fluid shall meet the oxidation resistance requirements specified
above and the metals shall comply with Table 8.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
17
Table 8 - Variation in the weight
4.20 -
Metals in contact with the fluid
Variation in the weight
-2
(mg.cm )
Electrolytic copper
≤ 0,4
Aluminium 2024
≤ 0,1
Magnesium G-A3Z1
≤ 0,2
Steel XC18S
≤ 0,1
Cadmium-plated steel
≤ 0,4
In-service lifetime (all fluids)
Test equipment :
- borosilicate glass test tubes (50 ml)
- hypodermic syringe (50 ml with 90 mm needle)
- test tube rack
- pipe cleaner
- tweezers
- glass paper (600 grain)
- paper towels
- distilled water
- 4 glass pipettes with polyethylene capsules
- rubber stopper
- goggles
- indelible marker pen "ONYX"
- 250 ml glass beaker
- acetone
- iron wire, diameter 1,60 mm
- copper wire, diameter 1,60 mm
- ruler
- cotton cloth
- metal file
- 8 flasks (2 ml)
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
18
Test method :
- Obtain the required fluid water content (see paragraph 4.2)
- Fill test tubes until 85% of fluid
- Put a piece of copper wire and metalloid wire into each test tube (cut to length to fit inside
tube) and seal
- Place the test tubes in an oven pre-heated to the required constant temperature, and
remove each test tube after exposing for the required period of time
After exposure, determine the following characteristics :
- Acidity index " AI ", as per paragraph 4.4;
- Electrical conductivity " γ " , as per paragraph 4.5 ;
- Absolute kinematic viscosity " ν ", as per paragraph 4.1.
Fluid manufacturer shall draw up fluid lifetime curves showing the evolution of the hereafter
fluid intrinsic characteristics :
- γ = f, g(t,T),
- ν = f, g(t,T),
- AI = f, g(t,T),
up to reach their respective limit values as specified in hereafter Chapter 7, under the
following conditions:
- fluid temperature = from 0 °C to +200 °C
- water content = 0,20 %, 0,35 %, 0,50 %
- chlorine content : 50 p.p.m., 200 p.p.m.
4.21 -
Compatibility with qualified fluids listed in APPENDIX E1
4.21.1 - Compatibility between fluids (all types) : different fluid mixtures shall be placed in
glass receptacles, in proportions of 25/75, 50/50 and 75/25 % by volume, and any
visible reactions noted.
Temperature conditions : [+135] °C maxi exposure
Duration
: 168 hours
Leave to cool at room temperature.
4.21.1.1 - Miscibility
After mixing the previously qualified fluids in the proportions and under
the conditions indicated above, the fluids shall be observed for colour,
turbidity, foaming, suspended particles and any other sign of
incompatibility. A change in colour is an acceptable reaction.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
19
4.21.1.2 - Foaming tests shall be performed using the method described in
paragraph 4.17 on qualified fluids mixed in the three proportions
indicated above, and on fluids mixed in equal proportions.
Tendency to foam :
- after bubbling the first sample for 5 minutes at +24 °C, the volume of
3
foam shall be ≤ 400 cm .
- after bubbling the second sample at +93 °C, the volume of foam shall
3
3
be ≤ 425 cm , then ≤ 425 cm after bubbling at +24 °C.
Foam persistence :
- no foam must remain after allowing the first sample bubbled at +24 °C
to stand for 250 seconds.
- no foam must remain after allowing the second sample bubbled at
+93 °C to stand for 200 seconds ; no foam must remain at +24 °C
after 220 seconds.
- no foam must remain at +24 °C after 220 seconds.
Foam volumes and persistence values must not exceed those indicated
in Table 9.
Table 9
Sample
Temperature
(°C)
Tendency to foam
3
(cm )
Foam persistence time
(s)
First
+24
≤ 400
≤ 250
+93
≤ 425
≤ 200
+24
≤ 425
≤ 220
Second
4.21.2 - Compatibility with elastomer materials
Tests shall be performed with O-Ring EPDM (ethylene-propylene) in accordance
with prEN 6109 (superseding NAS1613).
Standardized test pieces shall be immersed in the fluid according to the ratio :
Test piece volume/fluid volume = 1/30
Initial characteristics shall be determined before immersing the test pieces as per
APPENDIX E2.
Immersion cycles :
- 1 000 hours at +100 °C
- 750 hours at +120 °C
- 1 440 hours at +120 °C
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
20
Permissible characteristics and variations for elastomeric EPDM after immersion
in the fluid are given in APPENDIX E2.
Characteristics :
- international hardness (IRHD), as per standard ISO 48 - Method M;
- tensile test of test piece H2, as per method NF T 46-002 or ASTM D 1414 :
. modulus of elasticity at 100 % strain, E100
. tensile at break, σr
. elongation at break, A %
- relative mass variations, ∆M %, and volume variations ∆V % in accordance with
standard NF T 46-013 method A1 or ISO 1817 method.
- temperature at 10 % shrink (TR10), in accordance with standard NF L 17-106 or
ASTM D 1414.
For each characteristic, curves (characteristic versus immersion time into fluid in
isotherm conditions) will be provided, to demonstrate the stability of tested EPDM
(plateau to be reached).
4.21.3 - Compatibility with paints
Test pieces :
- 2024, T3 condition metal substrate, sulphur/chromium stripped
- Primers and paints :
. hydrodiluable P60A (MAPAERO),
. hydrodiluable P60A + finish hydrodiluable F70A.
4.21.3.1 - Resistance to hydraulic fluid
The painted test pieces are polymerized for 7 days at + 20 °C and then
shall be scratched down to the metal parallel to the sides and shall be
immersed in the fluid at +70 °C for 1 000 hours.
The following initial characteristics shall be determined per grid
adherence test in accordance with ISO 2409 and, before and after
immersion cycle, hardness, under 1 200 g weight per ISO 1518, in
accordance with ISO 2812 (after leaving the test piece to cool to
+20 °C, by immersing in cool fluid).
4.21.3.2 - Results after immersion
- grid adherence must be of 100 %
- after hardness tests ≥ 1 200 g, no penetration through primer and
finish to metal must be apparent. Scratching of the primer through to
the finish coat is acceptable
- no trace of blistering or any other surface defects must be visible.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
21
4.21.4 - Compatibility with electrical aircraft components as per EN 3475-411, EN 2591315 and specific standard requirements
Note : current electrical components (see list in APPENDIX E3) selected by
Design Office aircraft specialist involved shall be packed in individual
polyethylene bags and sent to qualified laboratory which will provide
expert's report with detailed analysis on behaviour of each component after
immersion on hydraulic fluid to be qualified.
4.21.4.1 - Electrical devices (cables, connectors…)
Immersion cycle : 160 hours at +70 °C in hydraulic fluid.
Note any signs of swelling and estimate the tear strength.
4.21.4.2 - Identification and protective elements (marking, sleeves, labels,
blanking plugs, backshells, sealing caps, adhesive tape…)
Immersion cycle in fluid at room temperature :
- 10 seconds at (+23 ± 3) °C, then leave to drip dry for a few minutes
(do not wipe)
- dry for 2 hours in a ventilated heat chamber set to (+70 ± 5) °C.
Immersion cycle in hot fluid :
- 1 hour in flasks of fluid placed in a ventilated heat chamber set to
(+70 ± 5) °C.
4.21.4.3 - Estimation criteria after immersion (see § 6 of EN 3475-411)
- visual aspect shall be correct
- connection components shall be functional (sealing, pluggings, clips...)
- markings shall be legible.
4.21.5 - Compatibility with structural elements, criteria (after immersion cycles)
APPENDIX E4
Immersion cycle : 1 000 hours at +70 °C in hydraulic fluid.
Perform tests before and after immersion.
Note any sign of swelling after immersion.
4.21.5.1 - Adhesives
Test pieces : 2024 substrate, A5 plating, T3 condition
(thickness = 0,5 mm) sulphur/chromium stripped
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
22
Test conditions :
-
+23 °C and +80 °C
-
monotonic rate of strain = 2 mm.min for shear
-1
-1
-1
test and = 100 mm.min (flux unit : 1N.mm =
-1
1Kn.m ) for adherence test
Determine :
- structural adhesives characteristics as per
prEN2243-1 method
- metal-metal peel test using Bell floating-roller
method as per prEN2243-2 method
Adhesives to be tested : epoxy-based adhesive FM73M with BR127
primer, 3M [AF 3109-2K] with EC3960 primer and REDUX 322 with
REDUX 122 primer.
4.21.5.2 - Composites
Test conditions :
-
test piece cut-out and sizing on sheet before
immersion
Determine :
-
monotonic rate of strain = 2 mm.min
-
temperature = (+23 ± 3) °C
-
relative humidity = (50 ± 5) %.
-1
- pure, static three-point bending (taper ratio L/h = 40)
as per EN2562 method
- interlaminar shear (taper ratio L/h = 5) as per
EN2563 method
Composites to be tested : 4.22 -
carbon/glass epoxy [V913-54 %/G973]
carbon/epoxy [T300/BSL914-34 %]
Lubrication (all fluids) : the test shall be carried out on a 4 ball machine in accordance with
standard ASTM D 2266.
Test conditions :
- temperature : +20 to +26 °C,
- rotation speed : 600 revolutions/minute,
- loads : 4, 10 and 40 kg,
- duration : (60 ± 1) minutes
Table 10 - Values of ball wear
Loads
(kg)
Dia. of average wear
(mm)
4
≤ 0,45
≤ 0,50
10
40
Type IV : ≤ 0,70
Type V : ≤ 0,80
AIRBUS FRANCE 2004. All rights reserved
NSA307110
4.23 -
Issue :
Mar 04
Page :
23
Second stage : Erosion test of the fluid on hydraulic test bench
To be performed after satisfactory results of preliminary stage of qualification
The aim of the erosion test is to compare the performances of the new TYPE V fluid to be
qualified to that of the TYPE IV fluid already qualified for the same fluid manufacturer
(Erosion Reference Test), particularly regarding the electro-chemical phenomenon on the
hydraulic equipment.
4.23.1 - Test Bench definition (system representative of one aircraft hydraulic system)
The list of equipment used on the bench, along with the references, is given in
APPENDIX F1.
The diagram of the test bench is given in APPENDIX F2.
The operating principle of the bench is as follows : hydraulic power supplies a
consumer circuit comprised of three servocontrols, a braking system and a motor
unit ; an electronic box controls each item of consumer equipment, with a given
operating cycle.
The temperature of the hydraulic fluid shall be controlled by a by-passable
exchanger that must not produce copper ions.
The nominal pressure supplied by the pump is 21 MPa.
The pressure and temperature parameters are permanently monitored : any
abnormal values leads to bench shutdown.
The hydraulic reservoir is air pressurized to a relative pressure of 35 kPa, with
direct contact between the air and the hydraulic fluid.
Bench capacity is approximately 70 litres, including that of the reservoir which is
26 litres (normal filling level).
The overall internal leakage of the bench shall be measured with a flowmeter.
Individual internal leakage of consumer equipment items (1, 2, 3, 4, 5) shall be
measured using an accurate method (1 % maximum error) which shall minimize
the quantity of lost fluid.
The bench fluid cleanliness class shall be maintained at ≤ 8 (see § 4.16)
4.23.2 - Test procedure
a)
-
Preparing the bench before the test
Fully drain the bench. Rinse the circuit with the new fluid : fill the bench and
operate for 5 minutes. Fully drain the rinsing fluid.
-
Fill the bench with the fluid to be tested, the water and chlorine content of
which shall have been increased to the following values :
. Water : (0,5 ± 0,05) %
. Chlorine : (200 ± 20) p.p.m.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
24
-
Replace the cartridges of the bench filters.
-
Take a sample from hydraulic circuit, via the bleed valve, to know the start
fluid properties as per paragraphs 4.1 to 4.5 (physical and chemical), and
4.16 (Cleanliness Class only).
Results must be as indicated in the technical data sheet, except for water
and for chlorine content increased to reach the here above values. Testing
must not start until these results have been confirmed.
b)
-
Test bench operation
Start the bench and operate until the fluid temperature stabilizes at +95 °C,
temperature which shall be maintained throughout the test duration, this
stabilization shall be reached within less than 2 hours' operation.
-
Perform the operating cycles indicated in APPENDICES F3 and F4 :
frequency shall be 1 cycle (or 1 Typical Flight = 1 TF) per 2 hours of bench
operation.
The total duration of bench operation for the test shall be 1 000 hours (500 TF).
-
Monitoring test parameters :
. Every ten hours, record the :
. hydraulic reservoir pressure,
. pump delivery pressure,
. fluid temperature,
. overall internal leakage of the circuit.
. At (0 ; 200 ; 400 ; 600 ; 800 ; 1 000) hours of test :
.
record the internal leakage of each item of equipment from 1 to 5. The
bench fluid temperature shall be lowered to (+30 ± 5) °C in order to
carry out these measurements.
. take a sample of circuit fluid, via the bleed valve, to verify that the mid-term
and final fluid properties as per paragraphs 4.1 to 4.5 (physical and
chemical), and 4.16 (Cleanliness Class only) are always in accordance
with requirements given in hereafter table.
Note : this test should be performed one time with the yet qualified fluid (as
reference) and repeated with the fluid to be qualified.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
c)
Issue :
Mar 04
Page :
25
Examination after 1 000 hours fluid testing : Perform a laboratory
examination of the following component and equipment removed from the
Test Bench:
. filters : pressure loss measurement, then disassembly of the filter elements
to check for gel or abnormal deposits.
. servocontrols : disassembly of the servovalves on equipment items 1, 2, 3
and 4 for defect investigation of internal parts.
. hydraulic motor and pump : disassembly to check the condition of internal
parts.
d) Analysis of results
Table 11 - Analysis of the test fluid sampled during and after the test
Property
Method §
Limits for all types
Acidity Index “AI” (mg KOH/g of fluid)
2 -1
Viscosity "ν" (mm .s )
at +38 °C
at +99 °C
-1
Conductivity "γ" (µS.cm ) at (+20 ± 0.5) °C
Colour - Condition
Cleanliness Class
4.4
0.5 max.
4.1
6.0 min.
3.0 min.
0.30 min.
Purple - Clear appearance
8 max.
4.5
4.11
4.16
Equipment defect investigation : parts sensitive to erosion, such as spools and
sleeves, fluid orifices and jet deviation systems shall be inspected in particular.
Any trace of electrochemical erosion, abnormal deposit or wear shall be noted.
The condition of parts inspected after testing with new fluid shall be comparable
to that obtained with the qualified fluid.
Table 12 - Erosion criteria
Servovalve
distributor parts
Eroded length
(µm)
Eroded depth
(µm)
Spool
≤ 40
≤5
Sleeve
≤ 25
≤5
≤ 30
≤6
Jet deviation
Hydraulic amplifier
system
Needle
No erosion in jet deviation slot
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
26
5 -
BATCHES
A manufacturing batch is constituted with a quantity of fluid derived from a same manufacturing
cycle.
6 -
QUALITY CONTROL
6.1 -
Acceptance tests
The manufacturer will carry out the manufacturing tests described in paragraph 6.1.1 on
each manufacturing batch.
The series of tests will be carried out on the product placed in a single recipient.
The results will be set out in an inspection document and transmitted to the buyer on
delivery with the certificate of compliance.
The manufacturer will be carried out the following tests, as described in paragraph 4, on
each batch:
6.1.1 -
Physical characteristics
- absolute kinematic viscosity (see paragraph 4.1) at -54 °C, +38 °C and +99 °C,
- density at +23 °C (see paragraph 4.3),
- pour point (see paragraph 4.7),
- flash point and fire point in an open vessel (see paragraph 4.8),
- self-ignition temperature (see paragraph 4.9),
- solid particle pollution (see paragraph 4.16),
6.1.2 -
Chemical characteristics
- water content (see paragraph 4.2),
- acidity index (see paragraph 4.4),
- chemical contaminants (see paragraph 4.6),
- toxicity (see paragraph 4.18).
Check test procedure : if a test result does not comply with the values
requested, the test will be repeated on three other samples in different recipients
which nevertheless belong to the same batch.
This batch will only be accepted if the three check tests are satisfactory.
Note : the recipient containing the non-compliant product will be withdrawn from
the batch.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
7 -
Issue :
Mar 04
Page :
27
RECOMMENDED LIMITS
The hydraulic fluid criterion values below represent the permissible limits for all fluids. The InService limits values (after A/C delivery below) are also specified in the Aircraft Maintenance
Manual.
Table 13 – Fluid monitoring before and after A/C delivery
Fluid characteristic
Unit
Absolute Kinematic Viscosity "ν" at +38 °C
2
mm .s
Water content [H2O]
%
-3
§
Before A/C delivery
After A/C delivery
4.1
7.5 min.
6.0 min.
4.2
[0.25] max.
[0.50] max.
Density "ρ" at (+23 ± 3) °C
kg.m
Acidity Index "AI" per g of fluid
mg KOH
4.4
-1
4.5
Electrical Conductivity "γ" at (+20 ± 0,5) °C
8 -
-1
µS.cm
∈ [970 ; 1 066]
4.3
0.20 max.
1.50 max.
0.30 min.
Chlorine content [Cl]
p.p.m.
4.6
80 max.
200 max.
Cleanliness Class
Class
4.16
8 max.
9 max.
MARKING
Unless otherwise specified by contract, marking shall include :
. On recipients :
- the manufacturing batch number,
- the fill-up date.
. On the label for each recipient :
- the manufacturer's name or trademark,
- the manufacturer's reference of the fluid, with “High Density” mention for Solutia 500B-4
- AIRBUS reference (NSA307110),
- contents (volume) and quantity (mass).
. Plus, where applicable :
- sampling precautions,
- handling and storage instructions.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
28
9 -
PACKING AND STORAGE
The fluid will be delivered in air-tight containers which be stored in a dry place.
The storage conditions shall be as follows :
- keep the recipients firmly closed,
- avoid any contact with solvents, particularly those belonging to the halogen family (Chlorine
for example) and Methanol,
- avoid contamination by water,
- avoid contamination by impure solids,
- avoid contamination by other fluids, including hydraulic fluids,
- do not expose the fluid to the open air for any long period of time or to temperature
exceeding +35 °C.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
29
TABLE OF APPENDICES
APPENDIX
SCOPE
A1
Applicable standards
2
30
A2
Equivalent standards
2
31
B1/B2
Auto-ignition temperature of liquid petroleum products
7
32/33
C1
Ignition test on a pipe-cleaner
9
34
C2
Ignition test under pressure
10
35
C3
Ignition test on a hot element
10
36
D1
Cleanliness Class Reference Table
12
37
D2
Filterability Index Set-Up
13
38
E1
Qualified manufacturers and products
2 & 19
39
19
40
E2
Compatibility with EPDM - Permissible characteristics and
variations after fluid immersion tests
PAGES
E3
Compatibility with electrical components
21
41
E4
Compatibility with structural elements
21
42
F1
Erosion system test bench equipment
23
43
F2
Erosion system test bench set-up
23
44
24
45
24
46
F3
F4
Erosion system test bench operation.
Duty cycles
Erosion system test bench operation.
Braking system duty cycles
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
30
APPENDIX A1 - APPLICABLE STANDARDS
Document
AIR 1651
Title
Lubricating oil test (laboratory test)
ASTM D 2603
ASTM for sonic shear stability of polymer-containing oils
ASTM D 2266
ASTM for wear preventive characteristics of lubricating grease (4 - balls)
ASTM D 877
ASTM for electrical dielectric break -down voltage of insulating liquids using
disk electrodes
§
4.19.2.2
4.19.1
4.22
4.14
prEN2243-1
Structural adhesives test methods
4.21.5.1
prEN2243-2
Metal-metal peel test using Bell floating-roller test method
4.21.5.1
EN2562
Pure, static three-point bending test method
4.21.5.2
EN2563
Interlaminar shear test method
4.21.5.2
EN 2591-315
Elements of electrical and optical connection Test methods Fluid resistance
4.21.5
EN3475-411
Cables, electrical, aircraft use Test methods Fluid resistance
4.21.5
NFL 17-106
Elastomers - Tests - Qualification - Inspection
4.21.4
NFL 17-141
Elastomers - Ethylene - Propylene - Class 41 B8 - Characteristics
4.21.4
NF L 41-101
Pollution of hydraulic circuits by solid particles - General
4.16
NFL 41-102
Pollution of hydraulic circuits by solid particles - Test method
4.16
ISO 12937
NF T 46-002
NF T 46-013
Chemical products - General principles for determining the water content
using the KARL FISCHER method
Rubber - Tensile test
Rubber and similar elastomers - Resistance of rubber-based (or similar
elastomers-based) - Method A1
4.2
4.21.2
4.21.2
ISO 2409 +
Paints - Grid tests on varnish and paints on a metal support
4.21.3
ISO 1518 & 2812
ISO 3104
ISO 3675
ISO 3016
ISO 48
ISO 6618
Petroleum products - Measurement of the absolute kinematic viscosity Density of petroleum products - Areometer method
Petroleum products - Density of petroleum products - Areometer method
Petroleum products - Determination of the cloud and pour points of
lubricating oils, fuel oils and diesel oils
Rubber and similar elastomers - Hardness test - Method M
Petroleum products - Neutralization value of (acidity or basicity) by titration
in the presence of colored indicators
4.1
4.3
4.7
4.21.2
4.4
ISO 2592
Petroleum products - Flash point and fire point in an open receptacle
4.8
ISO 6247
Petroleum products - Foaming characteristics of lubricating oils
4.17
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
31
APPENDIX A2 - EQUIVALENT STANDARDS
Document
ARP / AS 598
OR ASTM F 661
Title
§
Aerospace microscopic sizing and counting of particulate contamination for
fluid power systems
4.16.1
Aerospace - Procedure for the determination of particular contamination in
ARP 785
ASTM D 1298
hydraulic fluids by the control filter gravimetric procedure
Standard test method for density and relative density (specific gravity)
4.16.2
4.13
Standard test method for physical characterization of elastomeric EPDM
ASTM D 1414
4.21.2
products
Standard test method for determination of water in liquid petroleum products
ASTM D 6304
by KARL FISCHER reagent
4.2
Standard test method for wear preventive characteristics of lubricating grease
ASTM D 4173
(four - ball method)
4.22
ASTM D 445
Standard test method for determination of the absolute kinematic viscosity
4.1
ASTM D 892
Standard test method for foaming characteristics of lubricating oils
4.17
ASTM D 92
Standard test method for flash and fire points by Cleveland open cup
4.8
ASTM D 97
Standard test method for determination of pour point
4.7
Standard test method for acid and base number by colour indicator titration
4.4
ASTM D 974
Note : this above list is only indicative. In case of dispute, only the standards referenced in above
APPENDIX A1 will be considered.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
32
APPENDIX B1- Auto-ignition test - FURNACE DETAILS
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
33
APPENDIX B2 - Auto-ignition test - Furnace Heaters and Supports
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
34
APPENDIX C1 - IGNITION TEST ON A PIPE CLEANER
TEST DEVICE
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
35
APPENDIX C2 - IGNITION TEST UNDER PRESSURE
TEST DEVICE
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
36
APPENDIX C3 - IGNITION TEST ON A HOT ELEMENT TEST DEVICE
Dimensions in mm.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
37
APPENDIX D1
CLEANLINESS CLASS REFERENCE TABLE
TO BE USED FOR MICROSCOPIC PARTICLE COUNTING
(From NAS1638 cancelled and NFL41-101 valid)
Maximum Pollution Limits
Particle
Size Range
Counting / 100 ml of fluid
5 to 15
15 to 25
25 to 50
50 to 100
Over 100 (*)
00
125
22
4
1
0
0
250
44
8
2
0
1
500
89
16
3
1
2
1 000
178
32
6
1
3
2 000
356
63
11
2
4
4 000
712
126
22
4
S
5
8 000
1 425
253
45
8
6
16 000
2 850
506
90
16
S
7
32 000
5 700
1 012
180
32
8
64 000
11 400
2 025
360
64
9
128 000
22 800
4 050
720
128
10
256 000
45 600
8 100
1 440
256
11
512 000
91 200
16 200
2 880
512
12
1 024 000
182 400
32 400
5 760
1 024
(µm)
C
L
A
E
S
(*)Including fibres: a fibre is a particle with a length over 100 µm and a ratio length /width of 10
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
38
APPENDIX D2 – FILTERABILITY INDEX SET -UP
Manometer
Dry
Air or Nitrogen
Source
Shut-off Valve
(SOV)
Self-Regulating
Pressure
Reducing Valve
Pressurised
Container
Membrane Fitting
Graduated Flask
1-Store the fluid sampling at ambient temperature condition in hermetic flask during 24 hours in respect. Rinse correctly all
components (membrane + support) with filtered cleaning liquid through a DPM membrane (filterability less than 0,8 µm), dry
with filtered and pressurised air, the apparatus being maintained in a position facilitating the running of cleaning liquid. The
filtering membranes have to be dried in drying-oven at between 60 to 80°C temperature during minimum 10 minutes.
2-Install the components, with electrical bonding for m etallic parts, and put the filtering membrane on the support screen
using a nipper.
3-Shut the SOV and set the air or gas pressure at (1 ± 0,05) bar.
4-Pour around 320 cc of homogenised and de-aerated fluid to be tested on the pressurised container and shut hermetically it.
5-Open the SOV to pressurise the container.
Note: 4 and 5 will be quickly operated
6-The chronometer has to be triggered, monitoring a constant pressure (see 3) when the first drop of fluid is falling in the
graduated flask.
7-Record the corresponding time for each required volume (t50 for 50 cc, t100 for 100cc, t200 for 200cc, t 300 for 300cc) in a
sheet of results (table presentation recommended) giving the associated installation and room conditions and, if known, the
fluid cleanliness class (as per NS307110 § 4.16) and the fluid contamination (water and chlorine concentrations for aged
fluid) .
Notes:
1: if the measured time t50 were < 60 seconds, the test would be stopped and performed again with a pressure of (0,5 ± 0,05)
bar.
2: if the measured time t50 were < 600 seconds, the test would be stopped and performed again with a pressure of (2, 0±
0,05) bar.
3: stop the test after 2 hours (7200s) and record the total volume of filtered fluid.
4: perform each test 3 times for each referenced volume.
8-Shut the SOV and remove the components.
9-Examine visually the membrane to check if its colouring is homogeneous. If it is not the case, please, note that in the test
report.
10-Clean the components and rinse the pipes of testing installation using appropriated cleanliness liquid.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
39
APPENDIX E1 - QUALIFIED MANUFACTURERS AND PRODUCTS
FLUID
TYPE
QUALIFIED MANUFACTURERS AND PRODUCTS
DENSITY
EXXONMOBIL
SOLUTIA
(Ex-CHEVRON)
(Ex-MONSANTO)
SKYDROL 500B-4
Not to be used
High
on Airbus serial production lines.
(*)
Forbidden
IV
for new Airbus programs (*)
Low
V
Low
HyJet IV-A
PLUS
SKYDROL LD-4
HyJet V
(*) Please, consult the list of authorized fluid given in respective CML and AMM for each Airbus
aircraft.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
40
APPENDIX E2 - COMPATIBILITY WITH EPDM
PERMISSIBLE CHARACTERISTICS AND VARIATIONS
AFTER FLUID IMMERSION TESTS
DESIGNATION OF TEST CONDITIONS IN THE
FLUID TO BE QUALIFIED
CRITERIA NSA307110 MAX.
VARIATIONS AFTER IMMERSION
1. Reference tests before immersion
1.1 - International hardness (IRHD)
1.2 - Tensile test
1.2.1 - Tensile at break, σr, (Mpa)
1.2.2 - Elongation at break, A %
1.3 - Temperature (°C) at 10 % shrink (TR 10)
prEN 6109
∈ [76 ; 85]
≥ 12
≥ 125
≤ -45
2. After (1 000 ± 2) hours immersion at 100 °C
2.1 - IRHD variations
2.2 - Tensile test
2.2.1 - Tensile at break, σr, (MPa)
2.2.2 - Elongation at break, A %
2.3 - Swelling
2.3.1 - Relative volume variation, ∆V %
2.3.2 - Relative mass variation, ∆M %
2.4 - Temperature (°C) at 10 % shrink (TR 10)
NSA307110
∈ [-20 ; 0]
3. After (750 ± 2) hours immersion at 120 °C
3.1 - IRHD variations
3.2 - Tensile test
3.2.1 - Tensile at break , σr, (MPa)
3.2.2 - Elongation at break, A %
3.3 - Swelling
3.3.1 - Relative volume variation, ∆V %
3.3.2 - Relative mass variation, ∆M %
3.4 - Temperature at 10 % shrink (TR10), (°C)
NSA307110
∈ [-30 ; 0]
4. After (1440± 2) hours immersion at 120°C
4.1 - IRHD variations
4.2 - Tensile test
4.2.1 - Tensile at break , σr, (MPa)
4.2.2 - Elongation at break, A %
4.3 - Swelling
4.3.1 - Relative volume variation, ∆V %
4.3.2 - Relative mass variation, ∆M %
4.4 - Temperature at 10 % shrink (TR10), (°C)
NSA307110
∈ [-40 ; 0]
AIRBUS FRANCE 2004. All rights reserved
≥ 12
≥ 125
∈ [0 ; +20]
∈ [0 ; +17]
≤ -45
≥ 12
≥ 125
∈ [0 ; +20]
∈ [0 ; +17]
≤ -45
≥ 12
≥ 125
∈ [0 ; +20]
∈ [0 ; +17]
≤ -45
NSA307110
Issue :
Mar 04
Page :
41
APPENDIX E3 - COMPATIBILITY WITH ELECTRICAL COMPONENTS
DESIGNATION
Circular connector
Bayonet locking
plugs
STANDARD(S)
ASNE0052
ASNE0053
MATERIAL(S)
Fluorosilicon (Grommet)
MANUFACTURER(S)
Framatome
Deutsch
Rectangular
connectors
EN3545
Framatome
Sleeves for
electrical cable
Selfadhesive
placards
Solder sleeves for
shield termination
NSA937201ME
Gauge 00 & 04
ASNE0470
Thermoplastic(Body)
Ultem 5000
Fluorosilicon (Grommet)
Fluorosilicon
Polyolefin
Raychem
ASNE0160
Fluoropolyvinyliden
Raychem
ASNE0484
Silicon (heat shrinkable high
flexible)
Kynar
PTFE
ETFE
Silicon
Ethylen propylen
Sleeves
NSA937494
ASNE0432
Protected
attachement
clamps
Cable mounts
NSA5516ND, NV & NJ
Terminal modules
NSA937901M
Grounding modules
NSA937901MA
ASNE0425
ASNE0663
Tie
cable
Monobloc terminal
blocks
Single cable
NSA935401
NSA8420
NSA937905
Unscreened core
ASNE0262DK
Identification
sleeves
Marking hole label
NSA937201MA
Sealing plugs
Special backshells
for round
connectors
Cap sealing low
temperature
Adhesive tape
ASNE0261CF
ASNE0248
Gauges 09 & 22
ASNE0616
ASNE0080
NSA936604
ASNA35652725
Polyamid 6.6 (Nylon)
stabilisé en chaleur
Thermoplastic (Body)
+Fluorosilicon (Sealing)
Fluorosilicon
Raychem
Raychem
Superflexit
Espa
Zytel
Souriau, AIR-LB
Deutsch
Souriau, AIR-LB
Jupiter (Framatome)
PA 6.6 616 (Ty-rap)
Lacing tape
PEEK
PTFE
FEP
(Laser CO2)
Hellermann
Westernfilament
AIR-LB
PTFE
(Laser CO2)
Polyolefin
ME-MG
Polyolefin
Fileca, Filotex
PTFE or PA 6.6
PTFE
Aluminium (Fluorosilicon)
Framatome
PIDG insulating sleeve
PA 6.6
SCOTCH 69
AMP
AIRBUS FRANCE 2004. All rights reserved
Fileca, Filotex
Raychem
Raychem
Glenair
3M-France
NSA307110
Issue :
Mar 04
Page :
42
APPENDIX E4 - COMPATIBILITY WITH STRUCTURAL ELEMENTS
(AFTER IMMERSION CYCLES)
SYSTEM
Metal/metal
adhesive
FM73M
BR127
Composite
adhesive
REDUX 322
Composite
adhesive
AF 3109-2K
Composite
T300
BSL914-34 %
Composite
V913-54 %
G973
CHARACTERISTICS
CRITERIA NSA307110
Tensile strength
σr, MPa
σr / +23 °C ≥ 30
σr / +80 °C ≥ 20
Peel : Flux, N.m/m
at +23 °C ≥ 10
σr / +80 °C ≥ 6
Tensile strength
σr, MPa
σr / +23 °C ≥ 16
Peel : Flux, N.m/m
at +23 °C ≥ 5
Tensile strength
σr, MPa
σr / +23 °C ≥ 33
Peel : Flux, N.m/m
at +23 °C ≥ 60
Interlaminar shear
τ, MPa
Failure type
τ / +23 °C ≥ 90
"in shear"
Pure bending
Modulus of elasticity
E, GPa
E ≥ 105
Static breaking stress ( bending 3 pts)
σrs, MPa
σrs / +23 °C ≥ 1 600
Interlaminar shear
τ, MPa
Failure type
τ / +23 °C ≥ 50
"in shear"
Pure bending
Modulus of elasticity
E, GPa
E ≥ 28
Static breaking stress ( bending 3 pts)
σrs, MPa
σrs / +23 °C ≥ 400
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
43
APPENDIX F1 - EROSION SYSTEM TEST BENCH EQUIPMENT
EQUIPMENT MANUFACTURER
PERFORMANCE / SPECIFICATION
DEFINTION - FUNCTION
MANUFACTURER'S CONTACT
EATON
HYD DRIVEN PUMP PV3-300-13F
P/N 972630
“EDP” HYDRAULIC POWER
ABEX-PARKER
(Outer aileron servocontrol fitted with a
PARKER EHSV)
Model 415-PI-0291
Flow rate = 175 l/minute
A2910A001C-Issue 1 29 MAI 1989
Internal leak = [ 7 ; 15 ] l/min (i.e. + 114%)
Jim GERWIEN JimGerwien@eaton.com
ES-PI-0291(wiring and spool valve bias to be in accordance with
415-2209 requirements)
Overlap = [1,75 + 0,5]%
Internal leak = [0.58 ; 0.54] l/min (i.e. - 8.3% questionable data)
SERVOCONTROL 1
Werner DITTRICH Wdittrich@parker.com
HR-TEXTRON
(Outer aileron fitted with a TEXTRON
EHSV)
P/N X22282590
X22282590 Dated 97-05-19
Overlap=[1,9 + 0,5]%
Internal leak = [0.78 ; 0.82] l/min (i.e.+ 5%)
Paul SHIH pshih@hrtextron.textron.com
SERVOCONTROL 2
MOOG
(Outer aileron fitted with a MOOG EHSV)
Model D026-013B
P/N B33026-001B
SERVOCONTROL 3
ABEX-PARKER Hyd Motor (LIEBHERR
Equipment)
Type AM1C-032
P/N 42035
3338034 Rev D
Overlap=[3,4 +0,5] %
Internal leak = [0.45; 0.51] l/min (i.e.+ 13%)
HYDRAULIC BLOCK 5
MESSIER-BUGATTI
IN-LHC EHSV BRAKING C20374000-2
(Braking SV from Hydraulic Châteaudun)
Olaf BIEDERMANN olaf.biedermann @lli.liebherr.com
Spring-loaded HYD ACCUMULATOR
3
800 cm capacity
Barry SCHMITT bschmitt@moog.com
Constant Flow Rate = 89 l/minute
Internal leak evolution = [X ; Y] l/min (i.e.+ x%) TBD
X = Internal leak at t0 ; Y = Internal leak at t0+22 hours
Internal leak = [ 0.63 ; 0.68] l/min (i.e.+ 8%)
Cedric BOUVRY cbouvry@inlhc.zodiac.com
Michel PERRIN Michel.perrin@messier-bugatti.com
Characteristic
3
Capacity (cm )
60
7
20
Pressure (bar)
BRAKING BLOCK 4
GOODRICH Aeronautical Systems
HYDRAULIC RESERVOIR P/N
C19JS0013
HYDRAULIC FLUID RSVR
OTHER Equipment/Components
as Filters (SOFRANCE), Accumulator
(OLAER), Relief Valve, Bleed Valve,
Corrosion resistant pipes
Air-pressurized to 3.5 bar (relative pressure)
Not to be provided
See Airbus Qualified Aeronautical Equipment & Components
Only Consumable Components to be provided
Note: that above list is attached to the Erosion System Test Bench set-up given in APPENDIX F2.
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
44
APPENDIX F2 - EROSION SYSTEM TEST BENCH SET-UP
AIRBUS FRANCE 2004. All rights reserved
NSA307110
Issue :
Mar 04
Page :
45
APPENDIX F3 - EROSION SYSTEM TEST BENCH OPERATION
DUTY CYCLES
OPERATING CASE
SURFACE RATE
Pressurization
0/206 bar/0
Check list
manoeuver 40°/sec.
Take-off and climb
Descent and
approach
15°/sec.
Cruise
5°/sec.
Ground spoiler
40°/sec.
A340
AILERON
EHSV
HYDRAULIC
MOTOR
SURFACE
DEFLECTION
NUMBER OF
FUNCTIONING
PER CYCLE
ACTUATION
DURATION
30°/0/30°
2
0/-25°/25°/0
2
20°
±1°
± 2°
± 4°
± 6°
± 10°
3
1,5
0,5
0,1
0,04
0,02
64
36
13
2,4
0,9
0,4
54
30
11
2
0,8
0,4
21
12
4
0,8
0,3
0,15
0°
± 0,5°
± 1,5°
± 3°
± 4°
± 6°
820
260
45
15
10
0°
± 1°
± 2°
± 4°
± 6°
± 10°
0°
± 1°
± 2°
± 4°
± 6°
± 10°
15°
± 1°
± 2°
± 4°
± 6°
± 10°
20°/-25°/0°
1,2
AIRBUS FRANCE 2004. All rights reserved
BRAKE
EHSV
30 sec.
1 min.
See
APPENDIX F4
for the
cycle definition
30 sec.
50 sec.
NSA307110
Issue :
Mar 04
Page :
46
APPENDIX F4 - EROSION SYSTEM TEST BENCH OPERATION
45 46
49 50
Time (seconds)
Blanked reservoir return
Return pressure =
supply pressure = 155 bars
10 brakes 30 sec.
Operating pressure
Supply pressure
AIRBUS FRANCE 2004. All rights reserved
6
80
150
bars
206
0
4
18
Current (mA)
36
0
4 sec.
5
10 sec.
9 ±1,7 mA - 10 Hz sinus
15
1
3
Return pressure = Reservoir pressure = 6 bars
SERVOVALVE CURRENT
SUPPLY PRESSURE
1
3
6 bars
1
BRAKING SYSTEM DUTY CYCLES
NSA307110
Issue :
Mar 04
Page :
47
AMENDMENT RECORD SHEET
Issue
Modified
paragraph
A.10.73
Modification summary
Justification
New standard.
B.04.77
C.04.79
D.01.80
E.08.86
Page 4
Page 28
"Type" deleted. Note modified.
"Type IV", "high density" added, LD4 and
HYJET IV deleted.
Column "type IV, low density" and note added.
Amendment record sheet added.
F.03.88
Page 22
Chapter 11 added : LIMIT
CHARACTERISTICS OF THE FLUID IN USE.
Request AI/ST31 as per
note ref. 983387/88 of
12.02.88
G.01.89
Page 22
Water content modified : 0,80 % changed to
0,50 % max.
Page 28
Request
RFS AI/A5060/88
Column "type IV, low density" added, with new
fluid : HYJET IV -A.
Page 2
H.06.93
Chapter 11 added.
Standard fully amended.
Request A/DET/SY
Qualification requirement for fluid "type V"
added.
J.11.97
Standard amended (cross-references to
ANNEXES 1 to 13 modified or added).
Clarification of
requirements and
qualification criteria for "all
types of fluid".
§4
Qualification cutted up 3 stages.
Tests formalized and certain criteria added or
changed.
Hydrostatic modulus test deleted.
4.4
AI was ≤ 0,15.
4.5
γ was ≥ 0,30 mS.cm-1.
4.8
ASTM D 92 added.
§ 4.12
"Ea" independent of "g".
§ 4.13
Coefficient was α ≤ 0,6 x 10-3 °C-1.
§ 4.16.3
Clogging index changed to Filterability index.
§ 4.19.1to the last standard issue are indicated by a vertical line
NOTE : Modification
in the margin.
AIRBUS FRANCE 2004. All rights reserved
To reflect report
DCR/M-62146-94 and
DCR/M-62393-97
NSA307110
Issue :
Mar 04
Page :
48
AMENDMENT RECORD SHEET
Issue
Modified
paragraph
§ 4.19.1
Modification summary
Clogging index changed to Filterability index.
Sonic shear stability test in accordance with
§ 4.20
ASTM D 2603.
§ 4.21
Lifetime test formalized.
Compatibility tests restructured.
§ 4.21.3
Copper compatibility test deleted.
§ 4.21.5
Elastomers : Test at +120 °C added.
§ 4.21.5.3
§ 4.21.6
Modified.
Criteria added.
§ 4.22
Modified.
§ 4.23
Value 0,70 changed to 0,80 in table 13.
§ 4.23.2
§ 4.24
Chapter 7
Aim of the bench test specified.
Text added at the end of b.
"In-Service Evaluation" added.
"Limit characteristics" changed to
Chapter 9
Chapter 10
ANNEX 1 to 13
ANNEX 3
"Recommended limits". Class 9 added.
Title corrected.
Integrated in chapter 3.
Modified or added.
List of qualified manufacturers and products
modified.
ANNEX 7
HYJET IV-A PLUS and EXXON added.
ANNEX 9
Modified.
ANNEX 11
Added.
VICKERS pump ref., ABEX/TEXTRON/MOOG
EHSV and reservoir changed.
Column specification added.
Manufacturer of "MESSIER-BUGATTI"
servovalve specified.
"LIEBHERR" hydraulic motor ref. changed and
specified.
NOTE : Modification to the last standard issue are indicated by a vertical line
in the margin.
AIRBUS FRANCE 2004. All rights reserved
Justification
NSA307110
Issue :
Mar 04
Page :
49
AMENDMENT RECORD SHEET
Issue
Modified
paragraph
K.03.01
All
Modification summary
New EADS logo. AEROSPATIALE replaced
by AIRBUS FR.
General standard overhaul taking into account
new EN or ISO standards.
TYPE IV and TYPE V fluid requirements
differentiated when distinct.
4
2 stages of qualification instead 3 (In-Service
Evaluation treated out of NSA307110
requirements).
4.1
Viscosity min. value at 99 °C decreased from
3 to 2 cst.
4.3
Density min. values precised.
4.5
Electrical conductivity min. value was 0,25.
4.6
Chemical components modified in table 2
for total chlorine condition : requirements
≤ 20 changed to ≤ 50 for type IV and ≤ 30
for type V.
4.21.3
Compatibility with EPDM elastomer materials
revised.
4.21.4
Compatibility with paint (new paints).
4.21.5
Compatibility with electrical components (list
appended deleted).
4.21.6
Compatibility with structural elements
(precisions added).
ANNEXES
New presentation following Table of Annexes
page 24 in accordance with new NSA307110
presentation.
NOTE : Modification to the last standard issue are indicated by a vertical line
in the margin.
AIRBUS FRANCE 2004. All rights reserved
Justification
NSA307110
Issue :
Mar 04
Page :
50
AMENDMENT RECORD SHEET
Issue
Modified
paragraph
L 12.03
3.2 Table 1
Modification summary
Types II and III and Temperature range
deleted. Type IV shared in “HD” and “LD”
Justification
ExxonMobil Hyjet V
qualification as per Airbus
fluids, type V allowing only “LD” fluid. “HD”
RP030575 Qualification
limitation use and forbidden for new Airbus
Report 7/02/2003
A/C (as per APPENDIX E1).
Change note Airbus A380
LYA3394
3.3
Technical data sheet updated.
+ Table 2
3.4
+ App E1
Qualified manufacturers and products (as per
APPENDIX E1) updated: HyJet V added +
Change note Airbus A380
LYA3394
footnote(*) on allowed fluids in keeping with
linked CML & AMM.
3.5
4.1 Table 3
Certified laboratories : new text.
Viscosity at +99 °C was ∈ [2,00 ; 4,00]
4.2
[H20]: NFT20-052 replaced by ISO 12937.
4.3
ASTMD 1298 equivalent to ISO 3675.
4.6
“Contaminant” and Table 4 deleted.
New text.
4.10.2 Table 4
Pt Column completed by “a”
4.10.3 Table 5
Pt Column added
4.16
“Pollution” replaced by “contamination”.
NAS1638 cancelled
Cleanliness Class by microscopic counting.
Table 6 updated (Type II and III deleted) with
Class limits.
+ App D1
Cleanliness Class Reference appended.
4.16.3
“ FI “ testing Set-up integrated in App D2.
4.19.2
Thermal, corrosion and oxidation stability
global presentation rectified.
4.19.2.1
Thermal stability requirements change ( “dry”
+ temperature conditions).
4.19.2.2
Corrosion and oxidation stability rectified.
Table 8
Linked requirements.
4.20
Lifetime Test Method precision added
NOTE : Modification to the last standard issue are indicated by a vertical line
in the margin.
AIRBUS FRANCE 2004. All rights reserved
From NF E 48-690
NSA307110
Issue :
Mar 04
Page :
51
AMENDMENT RECORD SHEET
Issue
Modified
paragraph
4.21
Modification summary
Justification
Exposure temperature = Maxi +135°C.
High temperature tests deleted.
App E2
EPDM compatibility requirement completed.
App E3
Electrical components list added.
4.23
Aim of erosion test precision;
Sampling requirements and limit result
completed.
4.23.1
APPENDICES F1 & F2 inverted;
Cleanliness Class precision.
4.23.2 a)
“Except for water and for Chlorine content
increased…values”.
4.23.2 b)
Frequency corrected: 1 cycle (or 1 TF ) / 2
hours; 1 000 hours = 500 TF;
4.23.2 d)
App (F1 to F4)
Table (11) completed
Test Bench (Equipment list + Set-up) updated
“Erosion system test bench…” new title.
6.1.1
“Foaming test deleted.
7
Requirements completed in Table (13)
8
Marking .On the label after the reference of
the fluid, with “High Density” mention added
for Solutia 500B-4.
AIRBUS reference (NSA307110)
M 03.04
App (A1 + A2)
App A1
Checked and updated.
Added ISO 6247 (Equivalent to ASTM D 892
in App A2) was in App A2 (erratum)
App D2
Mock-up reviewed due to overlap between
figure and text
App E1
Limitations of use for HD indicated in table
(*) CML / AMM list to be consulted.
4.21.6
Sealant and protective vanish deleted.
App E4
App F1
Test bench equipment list completed.
NOTE : Modification to the last standard issue are indicated by a vertical line
in the margin.
AIRBUS FRANCE 2004. All rights reserved
See prEN 6109