TM 1–1520–238–T–1
4–80
Change 4
4–12 STAB – INTERACTIVE FD/LS CHECK
4–12
(ACY)
4-80
Tools:
Nomenclature
Part Number
Headset–Microphone
H–157/AIC
Cord Assembly,
7–262100009
Maintenance Headset
Personnel Required:
(3)
References:
TM 1-1520-238-T-7
TM 9-1230-476-20-2
TM 1-1520-238-23
Equipment Conditions:
Ref
Condition
TM 1-1520-238-23
Stabilator inspection and rigging
performed
NOTE
For a helicopter with BUCS deactivated,
BUCS FAIL indicators on the pilot and CPG
master caution/warning panels (fig. 2–9 and
2–36) are normally lit.
Control/switch position changes prompted by
FD/LS must be performed within 30 seconds
of prompt message, or a false NO–GO
message appears.
If FD/LS message on HOD (fig. 2–34) does
not change within 2 seconds after responding
to the prompt (acknowledge), discontinue
FD/LS test; go to TM 1-1520-238-T-7 and
perform the STABILATOR – OPERATIONAL
CHECK.
Utility hydraulics are required for
STAB – INTERACTIVE FD/LS CHECK.
If the AGPU is selected to provide power to
the aircraft, refer to paragraph 3–1. If the APU
is selected to provide power to the aircraft,
refer to paragraph 3–3.
If NO–GOs are detected during the FD/LS
check, the prompt (message) PLACE
ROTOR BRAKE SWITCH TO DESIRED
POSITION ACK VIA KBD appears on the
HOD. Acknowledging the prompt causes the
system NO–GOs to appear on the HOD.
