BHT-407-MM-2
CHAPTER 10 — PARKING AND MOORING
TABLE OF CONTENTS
Paragraph
Number
Chapter/Section
Number
Title
Page
Number
PARKING AND MOORING
10-1
10-2
10-3
10-4
10-5
10-6
10-7
10-8
10-9
10-10
10-11
Parking and Mooring......................................................................
Covers, Plugs, and Tie-downs..................................................
Plug Assembly — Engine Inlet .................................................
Cover Assembly — Pitot Tube..................................................
Cover Assembly — Engine Exhaust.........................................
Plug Assembly — Oil Cooler Blower Inlet Duct ........................
Main Rotor Blade — Tie-down Installation ...............................
Tie-down Tail Rotor Strap Assembly ........................................
Parking — Normal and Turbulent Conditions
(Winds Up to 50 Knots).............................................................
Mooring (Winds Above 50 Knots) .............................................
Helicopter Storage and Preservation........................................
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3
3
3
3
5
5
5
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FIGURES
Figure
Number
10-1
Page
Number
Title
Covers and Tie-downs ........................................................................................
Export Classification C, ECCN EAR99
11 NOV 2014
Rev. 41
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BHT-407-MM-2
PARKING AND MOORING
10-1.
PARKING AND MOORING
This chapter gives the procedures and equipment
necessary to park and moor the helicopter.
10-2.
COVERS, PLUGS, AND TIE-DOWNS
The protective covers, plugs, and tie-downs are
supplied as loose equipment. Use them when you
park or moor the helicopter. You can park the
helicopter during normal and turbulent (winds up to
50 knots) weather conditions, but if winds above
50 knots are forecasted you must moor the helicopter.
Additional equipment such as ropes, cables, clevises,
ramp tie-downs, or dead man tie-downs are necessary
to moor the helicopter. An optional blade fold kit is
available.
10-3.
The engine inlet plug assemblies (2, Figure 10-1) are
made of 9.85 ounces (0.279 kg) of cotton duck
material. The engine inlet plug assemblies are red in
color and flame resistant. A red streamer, stenciled
with the white letters REMOVE BEFORE FLIGHT, is
attached to each engine inlet plug assembly.
1. To install the engine inlet plug assembly, make
sure the side marked TOP is up. Push the engine inlet
plug assembly into the engine air inlet.
10-4.
NOMENCLATURE
206-070-438-007
Pitot Tube Cover
Assembly
206-070-469-001
Tie-down Tail Rotor
Strap Assembly
206-072-400-001
Engine Exhaust Cover
Assembly
206-072-401-003
Engine Inlet Plug
Assembly
406-070-300-107
Main Rotor Blade
Tie-down Installation
407-070-101-101/-103
Oil Cooler Blower Inlet
Duct Plug
Commercial
Dead Man Tie-down
Commercial
Mooring Clevis
Export Classification C, ECCN EAR99
COVER ASSEMBLY — PITOT TUBE
The pitot tube cover assembly (1, Figure 10-1) is
made of 9.85 ounces (0.279 kg) of cotton duck
material and covered with red flame resistant cloth. A
red streamer stenciled with the white letters REMOVE
BEFORE FLIGHT is attached to the pitot tube cover
assembly.
SPECIAL TOOLS REQUIRED
NUMBER
PLUG ASSEMBLY — ENGINE INLET
CAUTION
T H E P I T O T T U B E C A N B E H O T.
CONTACT WITH A HOT PITOT TUBE
C A N R E S U LT I N I N J U R Y T O
PERSONNEL.
1. To install the pitot tube cover assembly, push it
over the pitot tube. Attach the cord.
10-5.
COVER ASSEMBLY — ENGINE EXHAUST
The engine exhaust cover assembly (3, Figure 10-1) is
made of 9.85 ounces (0.279 kg) of cotton duck
material and covered in red flame-resistant cloth. A
red streamer, stenciled with the white letters REMOVE
BEFORE FLIGHT, is attached to the engine exhaust
cover assembly. A 1/4 inch (6.35 mm) diameter elastic
tie-cord is stitched to the engine exhaust cover
assembly.
1. To install the engine exhaust cover assembly,
push it over the exhaust tailpipe. Attach the tie-cord.
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BHT-407-MM-2
Figure 10-1. Covers and Tie-downs
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Rev. 41 11 NOV 2014
Export Classification C, ECCN EAR99
BHT-407-MM-2
10-6.
PLUG ASSEMBLY —
BLOWER INLET DUCT
OIL
COOLER
The oil cooler blower inlet duct plug assemblies (8,
Figure 10-1) are made of cotton duck material. They
are red in color and flame resistant. A red streamer
stenciled with white letters, REMOVE BEFORE
FLIGHT, is attached to each plug assembly.
b. Install the two FWD BLADES sock assemblies
(5) to the ends of the two main rotor blades forward of
the fuselage station of the main rotor hub.
c. Put a line assembly (6) around each outboard
end of the forward crosstube of the landing gear.
NOTE
1. To install the oil cooler blower inlet duct plug
assembly, push it into the oil cooler blower inlet duct.
10-7.
MAIN ROTOR
INSTALLATION
BLADE
—
TIE-DOWN
For each main rotor blade, there is a main rotor blade
tie-down installation. Each tie-down assembly (4,
Figure 10-1) has a sock assembly (5) and a line
assembly (6). Use these to attach the main rotor
blades to the landing gear crosstubes. The sock
assembly is made of red nylon and has a red
streamer, stenciled with the white letters REMOVE
BEFORE FLIGHT, attached to it. The line assembly is
made of 0.19 inch (4.83 mm) diameter nylon line.
Each line assembly has a ring and an attached flag.
The flag is stenciled with the letters FWD BLADES or
AFT BLADES.
1. Install the main rotor blade tie-down installations
as follows:
CAUTION
DO NOT C AUS E TH E MA IN ROTO R
BLADES TO BEND MORE THAN THE
LIMITS SHOWN IN FIGURE 10-1
D E TA I L A . D A M A G E T O T H E M A I N
ROTOR BLADES CAN RESULT.
NOTE
At the same time you align the main rotor
blades, align the tail rotor blades with the
vertical fin. This will make it possible to
install the tie-down tail rotor strap assembly
(paragraph 10-8).
a. Turn the main rotor blades until there are two
blades aft of the fuselage station of the main rotor hub.
When you look down on the helicopter, the four blades
make an X over the vertical centerline of the fuselage.
Export Classification C, ECCN EAR99
Rings are pre-set to apply the necessary
tension to the forward and the aft main rotor
blades.
d. Attach the snaps of the two line assemblies
(6) to the rings of the two FWD BLADES sock
assemblies (5).
e. Install the two AFT BLADES sock assemblies
(5) to the ends of the two aft main rotor blades.
f. Put a line assembly (6) around each outboard
end of the aft crosstube of the landing gear.
g. Attach the snaps of the two line assemblies
(6) to the rings of the two AFT BLADES sock
assemblies (5).
10-8.
TIE-DOWN
ASSEMBLY
TAIL
ROTOR
STRAP
The tie-down tail rotor strap assembly (7, Figure 10-1)
is made of 0.025 x 1.0 x 92.0 inch (0.635 x 25 x
2340 mm) nylon webbing. It is red and stenciled with
the white letters REMOVE BEFORE FLIGHT. Install
the tie-down tail rotor strap assembly as follows:
CAUTION
D O N O T C A U S E T H E TA I L R O T O R
BLADE TO BEND. DAMAGE TO THE TAIL
ROTOR BLADE CAN RESULT. THE TAIL
ROTOR BLADE SHOULD BE TIED SO
THAT IT IS LIGHTLY TOUCHING THE
STATIC STOP.
1. Turn the main rotor blades until there are two
blades aft of the fuselage station of the main rotor hub.
When you look down on the helicopter, the four blades
should make an X over the vertical centerline of the
fuselage. Align the tail rotor with the vertical fin.
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BHT-407-MM-2
NOTE
The tie-down may be placed around the
vertical fin either above or below the tail
rotor gearbox fairing.
2. Tie the tie-down tail rotor strap assembly (7)
around the vertical fin and the tail rotor blade.
10-9.
PARKING — NORMAL AND TURBULENT
CONDITIONS (WINDS UP TO 50 KNOTS)
SPECIAL TOOLS REQUIRED
NUMBER
NOMENCLATURE
206-070-438-007
Pitot Tube Cover
Assembly
Disconnect the battery (Chapter 96).
7. Close and safety all of the doors, windows,
cowlings, and access panels.
8. If the helicopter is parked outside in a heavy dew
environment, purge lubricate all of the control bearings
that are exposed to air. Do this once every 7 days.
Make sure no voids exist to trap moisture
(Chapter 12).
10-10.
MOORING (WINDS ABOVE 50 KNOTS)
SPECIAL TOOLS REQUIRED
NUMBER
NOMENCLATURE
206-070-469-001
Tie-down Tail Rotor
Strap Assembly
206-070-438-007
Pitot Tube Cover
Assembly
206-072-400-001
Engine Exhaust Cover
Assembly
206-070-469-001
Tie-down Tail Rotor
Strap Assembly
206-072-401-003
Engine Inlet Plug
Assembly
206-072-400-001
Engine Exhaust Cover
Assembly
406-070-300-107
Main Rotor Blade
Tie-down Installation
206-072-401-003
Engine Inlet Plug
Assembly
407-070-101-101/ -103
Oil Cooler Blower Inlet
Duct Plug
406-070-300-107
Main Rotor Blade
Tie-down Installation
407-070-101-101/ -103
Oil Cooler Blower Inlet
Duct Plug
Commercial
Dead Man Tie-down
Commercial
Mooring Clevis
1. Hover, taxi, or tow the helicopter to the specified
parking area (BHT-407-FM or Chapter 9).
2.
6.
Remove the ground handling gear (Chapter 9).
3. Attach the main and tail rotor blades with the
tie-down assembly (4, Figure 10-1) and the tie-down
tail rotor strap assembly (7) (paragraph 10-7 and
paragraph 10-8).
4. Install the engine inlet plug assembly (2), oil
cooler blower inlet duct plugs (8), pitot tube cover
assembly (1), and engine exhaust cover assembly (3)
(paragraph 10-3 through paragraph 10-6).
5. Tighten the friction locks on the flight controls.
Make sure that all of the switches are in the OFF
position.
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CAUTION
WHEN WINDS ABOVE 65 KNOTS
(120 KM/HR) ARE FORECAST, PUT THE
HELICOPTER IN A HANGAR OR MOVE IT
TO AN AREA OUT OF THE WEATHER.
FLYING OBJECTS DURING A HIGH WIND
CAN CAUSE DAMAGE TO THE
HELICOPTER.
Export Classification C, ECCN EAR99
BHT-407-MM-2
1. When you park the helicopter, point it in the
direction of the forecast winds.
NOTE
assembly (1), and engine exhaust cover assembly (3)
(paragraph 10-3 through paragraph 10-6).
7.
If the correct ramp tie-downs are not
available, park the helicopter on an
unpaved area. Use the dead man
tie-downs. Point the helicopter into the wind
and retract the ground handling wheels.
2.
CAUTION
MAKE SURE ALL OF THE SWITCHES
ARE IN THE OFF POSITION, AND ALL OF
THE CIRCUIT BREAKERS ARE OPEN.
THIS WILL PREVENT INADVERTENT
ACTUATION THAT CAN CAUSE DAMAGE
TO THE HELICOPTER.
Attach the helicopter to the dead man tie-downs.
NOTE
Use a mooring clevis at each of the three
jack fittings. This will let you use a rope with
a larger diameter.
3. Attach the cable, rope, or dead man tie-downs to
the helicopter jack fittings.
Tighten the friction locks on the flight controls.
8.
Disconnect the battery (Chapter 96).
9. Close and safety all the doors, windows, and
access panels.
10. Refuel the helicopter to its maximum capacity
(Chapter 12).
CAUTION
DO NOT C A US E T HE M A IN ROTO R
BLADES TO BEND MORE THAN THE
LIMITS SHOWN IN FIGURE 10-1,
D E TA I L A . D A M A G E T O T H E M A I N
ROTOR BLADES CAN RESULT.
4. Attach the main and the tail rotor blades with the
tie-down assembly (4) and tie-down tail rotor strap
assembly (7) (paragraph 10-7 and paragraph 10-8).
5. If time and storage space permit, remove the
main rotor blades (Chapter 62) and put them in a
building.
NOTE
Put all red streamers inside an access door
so that they will not flap in the wind.
6. Install the engine inlet plug assemblies (2), oil
cooler blower inlet duct plugs (8), pitot tube cover
Export Classification C, ECCN EAR99
CAUTION
SAFETY OR REMOVE ALL OF THE
EQUIPMENT AND OBJECTS IN THE
AREA. IF YOU DO NOT DO THIS, THE
WIND CAN BLOW THE OBJECTS
AGAINST THE HELICOPTER AND
CAUSE DAMAGE.
11. Safety or remove all of the equipment and objects
in the area.
12. When the winds stop, examine the helicopter for
damage.
10-11. HELICOPTER STORAGE AND
PRESERVATION
For information and procedures on storage and
preservation of the helicopter, refer to the
BHT-ALL-SPM, Chapter 10.
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