TM 1–1520–238–T–3
Change 4
11–5
11–10 SIGNAL NAME:
PYLON POS (ACY) PYLON POS AID (ACZ)
MEMORY LOCATION: 001465
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 position to RHE.
REMARKS: From FCC to RHE. Pylon elevation positioning data.
PASS:
If CONDITION has been met, go to paragraph 11–11.
FAIL: Location of fault: wiring from external stores elevation controller to pylon actuator controller.
Troubleshoot wiring to isolate fault (TM 9–1427–475–20).
11–11 SIGNAL NAME:
PYLN 1 POS (ACY) P1 POSITION (ACZ)
MEMORY LOCATION: 001655
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 1 position.
REMARKS: From pylon actuator controller (PAC) 1 through LH outboard (OUTBD) MRTU Type II to
FCC. Pylon 1 elevation positioning data.
PASS:
If CONDITION has been met, go to paragraph 11–12.
FAIL: Location of fault: external stores elevation controller, wiring from external stores controller to
pylon actuator controller 1, pylon actuator controller 1, wiring from pylon actuator controller 1 to
LH OUTBD MRTU Type II, LH OUTBD MRTU Type II. Troubleshoot wiring to isolate fault
(TM 9–1090–208–23–2).
11–12 SIGNAL NAME:
PAC 1 STAT
MEMORY LOCATION: 001654
MEMORY DATA BIT(S):
4–19
(SCALAR)
CONDITION:
(None)
SIGNAL FUNCTION:
Generates PYLN ACTUATOR CONTROLLER NO–GO LT OUTBD FD/LS
message.
REMARKS: From PAC through LH OUTBD MRTU Type II to FCC.
PASS:
If sixth digit on HOD is 0, go to paragraph 11–13.
FAIL: Location of fault: pylon actuator controller 1, pylon actuator controller 1, wiring from pylon
actuator controller 1 to LH OUTBD MRTU Type II, LH OUTBD MRTU Type II. Troubleshoot
wiring to isolate fault (TM 9–1090–208–23–2).
11–13 SIGNAL NAME:
PYLN 1 STAT (ACY) P1 COM STAT (ACZ)
MEMORY LOCATION: 001434
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Generates PYLON NO GO FD/LS message.
REMARKS: From FCC to RHE. Pylon 1 status to RHE.
PASS:
If first digit on HOD is 0, 2, 4, or 6, go to paragraph 11–27.
FAIL: Location of fault: replace RHE (TM 9–1427–475–20).
