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in adverse conditions (e.g., dust, desert,
coastal beach area, dry river beds) may
be deferred (maximum 5 flight hours)
at the discretion of the pilot in command
until a suitable location is reached.
In sandy or dusty conditions, it is advisable
to perform the HIT check while
airborne.
HIT check - As required. Perform for first
flight of day. Refer to HIT log in aircraft logbook,
This step may be performed at any time
prior to takeoff.
Change 4 8-13
TM 1-1520-238-10
6. ASE panel switches - As desired.
7. EXT LT switches - As desired.
8. PARK BRAKE - Release.
9. TAIL WHEEL switch - UNLOCK. Note that
green advisory light illuminates.
NOTE
If the advisory light fails to illuminate,
taxi forward a short distance while making
light pedal inputs.
*8.22. TAXI CHECK.
1. Wheel brakes - Check.
2. Engine/rotor instruments - Check.
3. Flight instruments - Check.
8.23 TAXI.
Excessive cyclic displacement with
low power settings may result in
droop stop pounding.
Excessive forward cyclic displacement
with low power settings may
result in high strap pack loads.
Initiate taxi by increasing collective to 20 to 24% torque
and applying slight forward cyclic pressure as required
to begin aircraft movement. To maintain forward movement
or taxi speed, do not reduce torque below 20%.
Control aircraft heading with pedals and speed with a
combination of collective, cyclic and brakes. Deceleration
may be controlled by using collective, aft cyclic,
and if required, brakes. Forward cyclic should be limited
to the position used to initiate taxi. Use slight lateral
cyclic into turns to maintain a level fuselage attitude.
Taxiing on soft, rough or sloping terrain may
require the use of more collective than on smooth, level
surfaces.
*8.24. BEFORE TAKEOFF CHECK.
1. HARS switch - Verify OPR.
2. Weapons systems - Safe.
a. Pilot MASTER ARM switch - OFF or
SAFE.
8-14 Change 4
3.
4.
5.
6.
7.
8.
b. CPG ARM/SAFE switch - OFF or
SAFE.
c. PLT and CPG weapons select switches -
As desired.
d. Ensure weapons not actioned.
TAIL WHEEL switch - LOCK.
PARK BRAKE - As desired
Systems check as follows:
a. FUEL panel switches.
b. Fuel quantity.
c. Engine instruments.
d. Caution/warning panel.
PWR levers - FLY.
If the DTC overwrites the active fly-to or target,
it is necessary to de-select and re-select
the active fly-to or target.
Power check - Perform. The power check is
done by comparing indicated torque required
to hover with the predicted values from performance
charts in Chapter 7 or Chapter
7A
8.25 BEFORE LANDING CHECK.
NOTE
Prior to landing, external stores may be
placed in the ground stow position by placing
the rocket select switch on either fire
control panel in the GND STOW position.
1. Weapons systems - Safe.
a. Pilot MASTER ARM/SAFE switch -
OFF or SAFE.
b. CPG ARM/SAFE switch - OFF or
SAFE.
c. PLT and CPG weapon select switches - As
desired.
d. Ensure weapons are not actioned.
2. TAIL WHEEL switch - LOCK.
3. PARK BRAKE - As required.
TM 1-1520-238-10
Change 6 8-15
8.26 AFTER LANDING CHECK.
1. TAIL WHEEL switch -- As required.
2. EXT LT controls -- As required.
3. Avionics -- As required.
4. ANTI-ICE panel TADS/PNVS switch -- OFF.
5. ASE panel switches -- As Required.
8.27 ENGINE SHUTDOWN -- PILOT.
NOTE
· To ensure availability of PAS during engine
shutdown, monitor ECS airflow
before, during and after APU start up.
· Normal ECS airflow through crew station
vents approximately one minute
after APU start indicates PAS is available
during engine shutdown.
1. TAIL WHEEL switch -- LOCK.
2. PARK BRAKE -- Set.
3. APU control switch -- START, then release.
L4. Weapons systems switches -- Secure as follows:
a. SIGHT SEL switch -- STBY.
b. PNVS -- Off (announce to CPG).
c. ACQ SEL -- OFF.
d. VID SEL -- PLT.
e. ACM -- OFF.
f. Weapons select switches -- OFF.
g. MASTER ARM/SAFE switch -- OFF.
5. DASE release switch -- Press.
6. Standby attitude indicator -- Cage.
7. VDU -- OFF.
8. Radar altimeter -- OFF.
9. HARS control switch -- OFF.
10. APU ON, caution/warning light -- On.
11. SHAFT DRIVEN COMP caution/warning
light -- Extinguished.
12. PWR levers -- IDLE.
CAUTION
If an engine is shut down from a high
power setting (above 90% NG) without
　
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