TM 1–1520–238–T–3
Change 4
11–7
11–18 SIGNAL NAME:
PAC 3 STAT
MEMORY LOCATION: 001766
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
(None)
SIGNAL FUNCTION:
Generates PYLN ACTUATOR CONTROLLER NO GO RT INBD FD/LS
message.
REMARKS: From PAC through RH INBD MRTU Type II to FCC.
PASS:
If sixth digit on HOD is 0, go to paragraph 11–19.
FAIL: Location of fault: pylon actuator controller 3, wiring from pylon actuator controller 3 to RH INBD
MRTU Type II, RH INBD MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
11–19 SIGNAL NAME:
PYLN 3 STAT (ACY) P1 COM STAT (ACZ)
MEMORY LOCATION: 001434
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Generates PYLON NO GO FD/LS message.
REMARKS: From FCC to RHE.
PASS:
If first digit on HOD is 0, 1, 2, or 3, go to paragraph 11–27.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
11–20 SIGNAL NAME:
PYLN 4 POS (ACY) P4 POSITION (ACZ)
MEMORY LOCATION: 002034
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
Monitor HOD while using the PYLON ACTG SW; memory location response should
increase when up (flight stow) is selected and decrease, then go negative when down
(ground stow) is selected.
SIGNAL FUNCTION:
Indicates pylon 4 position.
REMARKS: From PAC through RH OUTBD MRTU Type II to FCC. Pylon elevation positioning data.
PASS:
If CONDITION has been met, go to paragraph 11–21.
FAIL: Location of fault: external stores elevation controller, wiring from external stores elevation
controller to pylon actuator controller 4, pylon actuator controller 4, wiring from pylon actuator
controller 4 to RH OUTBD MRTU Type II, RH OUTBD MRTU Type II. Troubleshoot wiring to
isolate fault (TM 1–1520–238–T–8).
11–21 SIGNAL NAME:
PAC 4 STAT
MEMORY LOCATION: 002033
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
(None)
SIGNAL FUNCTION:
Generates PYLN ACTUATOR CONTROLLER NO GO RT OUTBD FD/LS
message.
REMARKS: From PAC through RH OUTBD MRTU Type II to FCC.
PASS:
If the sixth digit displayed on HOD is 0, go to paragraph 11–22.
FAIL: Location of fault: pylon actuator controller 4, pylon actuator controller 4, wiring from pylon
actuator controller 4 to RH OUTBD MRTU Type II, RH OUTBD MRTU Type II. Troubleshoot
wiring to isolate fault (TM 9–1090–208–23–2).
