HYDRAULIC FLUIDS
ATA:
29-00
FIN:
A/C Type:
A300
A300-600
A310
A318
A319
A320
A321
A330
A340
A340-500
A340-600
A350
A380
AST
A/C Serie:
Part Number:
Supplier:
SOLUTIA INC.
EXXON MOBIL
CORPORATION
Linked Articles:
Linked
Documentation:
Ref:
Topic:
29.00.00007
First Issue
Date:
19-SEP-2008
Last
Publication
Date:
25-MAR2015
This article replaces:
SIL Ref.: 29-090
Wise article Ref.: EngOps-16727
Engineering Support
Model:
First Issue Date:
19-SEP-2008
Last Publication Date:
25-MAR-2015
Manufacturer:
REFERENCES:
A300/A300-600/A310, A318/A319/320/A321, A330/A340:
-
AMM 12-12-00
A300/A300-600/A310, A318/A319/320/A321, A330/A340, A380:
-
AMM 20-31-00
CML 02ABA1
PMS 02-19-01 (NSA 307110: fluid specification)
ISI article 29.00.00157
1. PURPOSE
The purpose of this article is to provide information regarding hydraulic fluids to be used in the hydraulic
systems
of
the
different
Airbus
aircraft.
2. BACKGROUND
Several Hydraulic fluids are available from two suppliers ExxonMobil and Solutia. This article gives
references of hydraulic fluid to be used in Airbus aircraft.
3. DESCRIPTION
3.1
GENERAL:
Hydraulic fluids to be used in Airbus aircraft are according to specification NSA 307110.
This document can be found in the Process and Material Specification document (PMS 02-19-01). Fluids
are listed in Appendix E1, page 39.
The following table gives the hydraulic fluids that are qualified for Airbus aircraft program:
(“X” means that the fluid is qualified for a given A/C program)
AIRCRAFT PROGRAM
Fluid
manufacturer
Fluid name
EXXON Mobil
HyJet IV-A Plus
EXXON Mobil
Fluid type
WB
SA
LR
A380
A320
NEO
A350
Low density,
type IV
X
X
X
X
X
X
HyJet V
Low density,
type V
X
X
X
X
X
X
SOLUTIA
Skydrol 500 B-4
High density,
type IV
X
X
X
FORBIDDEN
SOLUTIA
Skydrol LD-4
Low density,
type IV
X
X
X
X
X
FORBIDD
EN
SOLUTIA
Skydrol PE-5
Low density,
type V
X
X
X
X
X
X
Table 1: Qualified hydraulic fluids for A/C programs
New hydraulic fluid Skydrol PE-5 (type V) from Solutia has been qualified /validated according to NSA
307110 requirements.
Consumable Material List (CML) and NSA 307110 were updated to indicate this hydraulic fluid as an
alternate fluid in the October 2010 revision.
3.2
RESTRICTIONS, RECOMMENDATIONS OF USE
3.2.1
Restrictions for A380, A350, A320NEO and future programs:
For A380, A350, A320NEO and future A/C programs, it is forbidden to use high-density fluid
Skydrol 500B-4.
All other type IV and V low-density fluids can be used, and mixed in any proportion.
However, type V fluids have been developed in the frame of new aircraft programs (A380…) with 5000psi
hydraulic pressure. These fluids have enhanced properties leading to increased life limit. Therefore, even
though type IV are allowed (with the exception of Skydrol 500B-4), type V ones should be preferred, and
are recommended by Airbus. For information, A380 aircraft are delivered with type V fluid.
For A350 Program, as a preventive measure, Hydraulic Fluid Skydrol LD-4 is banned on all A350
A/C as it can be an enabler for electro chemical erosion.
3.2.2
For A300/310, A320Fam, A330/340:
For A300/310, A320Fam, and A330/A340, all fluids mentioned in the table 1 can be used and mixed in
any proportion.
However, the improvements brought by last fluid generation (Type V) could also be of benefit for all
Airbus aircraft programs.
3.2.3
Skydrol 5: banned on Airbus Fleet
Skydrol 5 does not meet Airbus hydraulic fluid specification requirements and is not qualified to be used
on Airbus A/C Hydraulic Systems.
However, in order to avoid maintenance burden and possible AOG situations due to accidental in-service
contamination of Airbus A/C with Skydrol 5, an analysis has been performed by Airbus to determine the
contamination limit of Skydrol 5 to allow on Airbus A/C. Based on this analysis, the following allowance
has been defined:
If Skydrol 5 quantity < 5%: continuous operation is acceptable without any repercussions.
3.3
HYDRAULIC FLUID MONITORING:
Hydraulic fluid condition is to be monitored on a periodical basis (dedicated MPD tasks) as per AMM 1232-29 (for A300/310, A320 and A330/340 family aircraft) and AMM task 29-10-00-281-801A (for A380).
These procedures provide recommendations for taking fluid samples representative of hydraulic system
conditions, and give contamination limits not to be exceeded.
In case of contamination:
-
For A300/310, A320Fam, and A330/A340: AMM 12-36-29 details corrective actions,
For A380: AMM 29-11-00 pb301 and 29-13-00 pb301 details corrective actions.
Note: ISI article 29.00.00157 provides additional temporary authorizations.
4. AIRBUS ACTION
Not applicable.
5. MODIFICATION INFORMATION
Not
applicable.
6. MATERIAL
Not
applicable.
7. PROCUREMENT
Not applicable.
© Airbus SAS, 2016. All rights reserved. Confidential and proprietary document.The technical information
provided in this article is for convenience and information purposes only. It shall in no case replace the
official Airbus technical or Flight Operations data which shall remain the sole basis for aircraft
maintenance and operation. These recommendations and information do not constitute a contractual
commitment, warranty or guarantee whatsoever. They shall not supersede the Airbus technical nor
operational documentation; should any deviation appear between this article and the Airbus or airline's
official manuals, the operator must ensure to cover it with the appropriate document such as TA, FCD,
RAS. Access to WISE is supplied by Airbus under the express condition that Airbus hereby disclaims any
and all liability for the use made by the user of the information contained in WISE. It shall be used for
the user's own purposes only and shall not be reproduced or disclosed to any third party without the
prior consent of Airbus.