TM 1-1520-238-T-7
11–348
Change 5
11–88.
STABILATOR – MAINTENANCE OPERATIONAL CHECK (cont)
11–88
Task
Result
(5) On pilot aft circuit breaker panel (fig.
11–125), close circuit breakers in the
following order:
(a) STAB AUTO AC
(b) STAB AUTO DC
(c) Verify STAB POS indicator (fig.
11–126) indicates (25 2) ND
position.
If STAB AUTO AC circuit breaker does not stay
closed, go to paragraph 11–92.
If STAB AUTO DC circuit breaker does not stay
closed, go to paragraph 11–97.
If MAN STAB indicators (fig. 11–125) remain lighted
and STAB POS indicators are not (25 2) ND
position, go to paragraph 11–116.
To prevent damage to stabilator during movement, be sure stabilator is
clear of all obstructions before proceeding.
CAUTION
NOTE
When operating stabilator with stabilator manual control panel ND/NU
switch, use pulsating switch action to allow slow movement of
stabilator. Stabilator ND and NU means trailing edge down and trailing
edge up, respectively.
Audio tone must be manually reset. Closing circuit breakers will not
reset audio tone.
(6) On pilot center circuit breaker panel
(fig. 11–120), close ENG WARN circuit
breaker.
(7) Press ENG 1 OUT or ENG 2 OUT (fig.
11–121) pushbutton to suppress engine
out audio warning tone.
(8) On pilot aft circuit breaker panel
(fig. 11–125), open STAB AUTO AC
and STAB AUTO DC circuit breakers.
(9) On pilot collective stick (fig. 11–127),
press RESET pushbutton.
(10) Pull pilot collective stick (fig. 11–127) to
full up stop.
(11) Close STAB AUTO AC and STAB
AUTO DC circuit breakers
(fig. 11–125).
(AAV) If ENG WARN circuit breaker does not stay
closed, go to paragraph 11–124.
If engine out warning audio tone does not come on or
cannot be reset, go to TM 1-1520-238-T-6.
If audio tone is not heard, go to paragraph 11–120.
If audio tone is still heard, go to paragraph 11–117.
