TM 1–1520–238–T–3
12–8
Change 4
12–23 SIGNAL NAME:
PLT RKT ACTION
MEMORY LOCATION: 001555
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates pilot has actioned rockets.
REMARKS: From pilot cyclic stick WEAPONS ACTION SWITCH through pilot FCP, CPG FCP and
RH FAB MRTU Type I to FCC.
PASS:
If third digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 12–24.
FAIL: Location of fault: pilot cyclic stick weapons action switch, wiring from pilot cyclic stick weapons
action switch to pilot FCP, pilot FCP, wiring from pilot FCP to CPG FCP, CPG FCP, wiring from
CPG FCP to right–hand (RH) FAB MRTU Type I, RH FAB MRTU Type I. Troubleshoot wiring to
isolate fault (TM 9–1090–208–23–2).
12–24 SIGNAL NAME:
PLT RKT TRIG
MEMORY LOCATION: 001554
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates whether pilot has pulled cyclic stick trigger.
REMARKS: From pilot cyclic stick weapons action switch through pilot FCP and RH FAB MRTU Type
I to FCC.
PASS:
If third digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 12–25.
FAIL: Location of fault: pilot cyclic stick weapons action switch, wiring from pilot cyclic stick weapons
action switch to pilot FCP, wiring from pilot FCP to CPG FCP, CPG FCP, wiring from CPG FCP
to RH FAB MRTU Type I, RH FAB MRTU Type I. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
12–25 SIGNAL NAME:
PLT TRIG 1ST DET (ACY) PLT TRIG 1ST DTT (ACZ)
MEMORY LOCATION: 001554
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates pilot has pulled cyclic stick trigger to 1st detent.
REMARKS: From pilot cyclic stick weapons action switch through pilot FCP, CPG FCP, RH FAB
MRTU Type I to FCC.
PASS:
If second digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 12–26.
FAIL: Location of fault: pilot cyclic stick weapons action switch, wiring from pilot cyclic stick weapons
action switch to pilot FCP, pilot FCP,wiring from pilot FCP to CPG FCP, CPG FCP, wiring from
CPG FCP to RH FAB MRTU Type I, RH FAB MRTU Type I. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
