TM 1–1520–238–T–1
Change 4
4–81
4–12 STAB – INTERACTIVE FD/LS CHECK
4–12
(ACY) (cont)
1. Perform SYSTEMS – POWER–UP procedures in
accordance with paragraph 3–1.
2. Attach the microphone headset/maintenance headset
cord assembly to connector J306 located behind right
wing tip door RW12.
3. Perform FD/LS check as follows:
CAUTION
Make sure the stabilator is clear of all
obstructions before proceeding with the
FD/LS check. Failure to comply could cause
damage to aircraft components.
NOTE
When moving stabilator with manual control
ND (Nose Down)/NU (Nose Up) switch on
collective sticks, use pulsating switch action
to slow movement of stabilator. ND switch
action moves stabilator trailing edge down
while NU switch action moves trailing edge
up.
Refer to TM 1-1520-238-23 to replace units
referenced in this paragraph. Once a gyro,
actuator, or stabilator control unit (SCU) has
been replaced, do not replace again unless
directed by fault isolation procedure. Continue
test; do not repeat previous task setup.
Begin STAB–INTERACTIVE FD/LS check
with cyclic stick and collective stick centered.
Do not apply foot pressure on the directional
control pedals.
