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PLT DECOUPLER LONG 1 (ACY) P LONG DCPL1 STAT (ACZ) | Up
TM-1-1520-238-T-3 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Multiplex Read Codes Manual | Next
PLT CYCLIC GRIP FAIL (ACY) PLT CYC GRIP STAT (ACZ) |
TM 1–1520–238–T–3
Change 4
3–25
3–109 SIGNAL NAME:
PLT DECOUPLER DIR 1 (ACY) P DIR DCPL1 STAT (ACZ)
MEMORY LOCATION: 002107
MEMORY DATA BIT(S):
12
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of pilot decoupler directional (yaw) 1 switch.
REMARKS: From pilot decoupler directional (yaw) 1 switch through DASEC to FCC.
PASS:
If third digit displayed on HOD is 0 or 1, go to paragraph 3–110.
FAIL: Location of fault: pilot decoupler directional (yaw) 1 switch, wiring from pilot decoupler
directional (yaw) 1 switch to DASEC, DASEC. Troubleshoot wiring to isolate fault
(TM 1–1520–238–T–7).
3–110 SIGNAL NAME:
PLT DECOUPLER DIR 2 (ACY) P DIR DCPL2 STAT (ACZ)
MEMORY LOCATION: 002107
MEMORY DATA BIT(S):
13
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of pilot decoupler directional (yaw) 2 switch.
REMARKS: From pilot decoupler directional (yaw) 2 through DASEC to FCC.
PASS:
If third digit displayed on HOD is 0, go to paragraph 3–111.
FAIL: Location of fault: pilot decoupler directional (yaw) 2 switch, wiring from pilot decoupler
directional (yaw) 2 to DASEC, DASEC. Troubleshoot wiring to isolate fault
(TM 1–1520–238–T–7).
3–111 SIGNAL NAME:
PLT DECOUPLER COLL 1 (ACY) P CLTV DCPL1 STAT (ACZ)
MEMORY LOCATION: 002107
MEMORY DATA BIT(S):
14
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of pilot decoupler collective (vertical) 1 switch.
REMARKS: From pilot decoupler collective (vertical) 1 switch through DASEC to FCC.
PASS:
If second digit displayed on HOD 0, 1, 2, or 3, go to paragraph 3–112.
FAIL: Location of fault: pilot decoupler collective (vertical) 1 switch, wiring from pilot decoupler
collective (vertical) 1 switch to DASEC, DASEC. Troubleshoot wiring to isolate fault
(TM 1–1520–238–T–7).
3–112 SIGNAL NAME:
PLT DECOUPLER COLL 2 (ACY) P CLTV DCPL2 STAT (ACZ)
MEMORY LOCATION: 002107
MEMORY DATA BIT(S):
15
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates status of pilot decoupler collective (vertical) 2 switch.
REMARKS: From pilot decoupler collective (vertical) 2 through DASEC to FCC.
PASS:
If second digit displayed on HOD is 0 or 1, go to paragraph 3–113.
FAIL: Location of fault: pilot decoupler collective (vertical) 2 switch, wiring from pilot decoupler
collective (vertical) 2 switch to DASEC, DASEC. Troubleshoot wiring to isolate fault
(TM 1–1520–238–T–7).
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