TM 1–1520–238–T–3
11–10
Change 4
11–31 SIGNAL NAME:
PLT RKT GRD STOW
MEMORY LOCATION: 001120
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates PILOT ROCKET switch is set to GROUND STOW position.
REMARKS: From pilot FCP through LH FAB MRTU Type I to FCC.
PASS:
If second digit on HOD is 2, 3, 6, or 7, go to paragraph 11–32.
FAIL: Location of fault: pilot FCP, wiring from pilot FCP to LH FAB MRTU Type I and external stores
elevation controller, wiring from external stores controller to FCP, wiring from pilot cyclic stick
weapons action switch to pilot FCP, pilot cyclic stick weapons action switch, external stores
elevation controller LH FAB MRTU Type I. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
11–32 SIGNAL NAME:
PLT MSL ACT
MEMORY LOCATION: 000415
MEMORY DATA BIT(S):
05
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates pilot missile action.
REMARKS: From pilot FCP through CPG MRTU Type III to FCC.
PASS:
If fifth digit on HOD is 4, 5, 6, or 7, go to paragraph 11–33.
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 MRTU Type III, CPG MRTU Type III,
wiring from external stores controller to CPG FCP. Troubleshoot wiring to isolate fault
(TM 9–1427–475–20).
11–33 SIGNAL NAME:
PILOT MSL ENABLE
MEMORY LOCATION: 001120
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates missiles are enabled.
REMARKS: From pilot FCP through LH FAB MRTU Type I to FCC.
PASS:
If first digit on HOD is 4, 5, 6, or 7, refer to system interconnect (TM 9–1427–475–20).
FAIL: Location of fault: pilot FCP, wiring from pilot FCP to LH FAB MRTU Type I and external stores
elevation controller, LH FAB MRTU Type I, external stores elevation controller. Troubleshoot
wiring to isolate fault (TM 9–1427–475–20).
11–34 SIGNAL NAME:
EMERG STORES JETT SW (ACY) STORES JTSN SW (ACZ)
MEMORY LOCATION: 001532
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Jettisons external stores on pylons.
REMARKS: From pilot or CPG collective stick weapons action switch through RH FAB MRTU Type I
to FCC.
PASS:
If the third digit on HOD is 2, 3, 6, or 7, troubleshoot external stores wiring
(TM 1–1520–238–T–8).
FAIL: Location of fault: pilot collective stick weapons action switch, CPG collective stick weapons
action switch, wiring from collective sticks weapons action switch to RH FAB MRTU Type I, RH
FAB MRTU Type I. Troubleshoot wiring to isolate fault (TM 1–1520–238–T–8).
