TM 1–1520–238–T–3
27–4
Change 5
27–14 SIGNAL NAME:
RESERVED
MEMORY LOCATION: 003003
MEMORY DATA BIT(S):
14–12 (BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates serial digital error.
REMARKS: From FCC to EGI.
PASS:
If second and third digits displayed on CDU are 0, go to paragraph 27–15.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
27–15 SIGNAL NAME:
SUBSYSTEM FLAG
MEMORY LOCATION: 003003
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates subsystem fault.
REMARKS: From FCC to EGI.
PASS:
If first digit displayed on CDU is 0, go to paragraph 27–16.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
27–16 SIGNAL NAME:
TERMINAL FLAG
MEMORY LOCATION: 003003
MEMORY DATA BIT(S):
19
(BINARY)
CONDITION:
(None).
SIGNAL FUNCTION:
Indicates terminal fault.
REMARKS: From FCC to EGI.
PASS:
If fourth digit displayed on CDU is 0, go to paragraph 27–17.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
27–17 SIGNAL NAME:
INS UVW VEL VALID
MEMORY LOCATION: 002643
MEMORY DATA BIT(S):
4
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates INS velocity is valid.
REMARKS: From EGI to FCC.
PASS:
If sixth digit displayed on CDU is 1, go to paragraph 27–18.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
27–18 SIGNAL NAME:
INS ATTITUDE VALID
MEMORY LOCATION: 002643
MEMORY DATA BIT(S):
5
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates INS attitude is valid.
REMARKS: From EGI to FCC.
PASS:
If fifth digit displayed on CDU is 4, 5, 6 or 7, go to paragraph 27–19.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
27–19 SIGNAL NAME:
INS HEADING VALID
MEMORY LOCATION: 002643
MEMORY DATA BIT(S):
6
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Indicates INS heading is valid.
REMARKS: From EGI to FCC.
PASS:
If fifth digit displayed on CDU is 6 or 7, go to paragraph 27–20.
FAIL: Location of fault: Replace EGI (TM 11–1520–238–23–1).
