TM 1–1520–238–T–1
Change 4
4–88.7
4–12A STAB – INTERACTIVE FD/LS CHECK 4–12A
(ACZ) (cont)
TASK
RESULT
p. Operator shall
observe HOD for
next prompt.
When SLEW STAB TO
DOWN LIMIT ACK VIA KBD
appears on HOD, go to next
step.
q. Next to pilot
collective stick,
press ND/NU switch
on stabilator manual
control to ND until
stabilator reaches its
full down position.
The operator can observe the
current stabilator position on
the stabilator position
indicator. When indication is
full down, go to next step.
If NO–GOs appear on VDU,
stop FD/LS testing and
perform CORRECTIVE
ACTION.
NOTE
An advisory message AUTO STABILATOR
SYSTEM TEST IN PROGRESS indicates a
dynamic test has been initiated for 30 seconds
on each of the following stabilator systems: top
stabilator position actuator, bottom stabilator
position actuator, rate gyro1, rate gyro 2,
airspeed transducer 1, airspeed transducer 2,
stabilator control unit 1, and stabilator control
unit 2.
r. Operator shall
observe HOD for
next prompt.
When SLEW STAB TO UP
LIMIT THEN DEPRESS
RESET ACK VIA KBD
appears on VDU, go to next
step.
s. Next to pilot
collective stick,
press ND/NU switch
on stabilator manual
control to NU until
stabilator reaches its
full up position.
Observe the stabilator
position on the stabilator
position indicator. When the
stabilator has reached its full
up position, press the
stabilator RESET button on
the stabilator manual control.
NOTE
An advisory message AUTO STABILATOR
SYSTEM TEST IN PROGRESS indicates a
dynamic test has been initiated for 30 seconds.
