* 20. Cyclic trim Check GND position.
F* 21. Rotor blades Check position. Make sure
that a rotor blade is not within 30_ of the
centerline of the fuselage throughout con-
* 22. AFCS SYSTEM SEL switch Check as fol-
a. Select individual system and check oppo-
site AFCS caution capsule remains on.
b. Select BOTH and check both AFCS cau-
tion capsules go out.
c. AFCS SYSTEM SEL switch OFF.
LF* 23. Flight control travel and hydraulics
Check as follows: (For thru flights, complete
steps b thru e with FLT CONTR switch
If a helicopter is parked on a slope greater
than 4_, longitudinal stick travel may be re-
stricted to less than 7 inches forward (up
slope) or 4 inches aft (down slope).
Mixing of flight control inputs during ground op-
eration on a single hydraulic system should be
avoided. If the Flight Controls are moved rapidly
or erratically during the control check, unusual
vibrations may be felt, or flight boost hydraulic
fail indication may result.
Check caution capsules as the check is being
performed. With slow smooth flight control
inputs, check each axis individually thru full
travel for smoothness of operation. Check for
corresponding movement of the fore and aft
rotors during the check.
a. FLT CONTR hydraulic switch 1 ON.
b. Check cyclic for freedom of movement
in all quadrants. Check for a minimum
of 7 inches forward and 4 inches aft
c. Check thrust through full travel for free-
dom of movement and magnetic brake for
d. Check pedals through full travel for free-
dom of movement.
e. Position the cyclic and pedals at neutral,
thrust at ground detent.
f. FLT CONTR hydraulic switch 2 ON,
Repeat steps b thru e.
g. FLT CONTR hydraulic switch BOTH.
24. Avionics Perform operational check and
set as required.
O 25. HUD Program as required.
If the DECU display is other than 88, place the
ENG COND levers to STOP, turn B/U PWR
switch off, and remove all power from the
DECU by pulling the respective ENGINE PRI
and REV CONT circuit breakers on the PDP.
Reset circuit breakers and perform another
DECU prestart BIT. If other than 88s consult
DECU Fault Code List/Matrix in Chapter 2.
LF* 26. 714ADECU PRESTART BIT Perform
a. B/U PWR switch ON.
b. Wait until ENG FAIL, FADEC, and REV
caution lights go out.
c. ENG COND levers GND.
F d. DECUs Check displays read 88.
e. ENG COND LEVERS STOP.
ENGINE BEEP TRIM switch (NO. 1
& 2) Decrease for 8 seconds.
* 28. Ignition Lock switch ON.
F* 29. Area Clear for start.
Personnel must stay clear of the EAPS for
exhaust when the fans are operating. Sand
and debris within the EAPS will be ejected.
The EAPS fans have high start up electrical
power requirements. To prevent an overload,
the fans must be turned on one at a time. The
first fan must be allowed to stabilize for 10 - 15
seconds before the second fan is turned on.
O* 30. EAPS Fans On (delay 10-15 seconds
between turning on NO. 1 and NO. 2).
The flight controls must be manned any time
the helicopter is on the ground with rotors
Either engine may be started first.