TM 1–1520–238–T–3
14–26
Change 4
14–107 SIGNAL NAME:
PLT HOVER POS AZ BOX (ACY) PLT POSBOX AZ (ACZ)
MEMORY LOCATION: 000705
MEMORY DATA BIT(S):
4–12
(SCALAR)
CONDITION:
Displays pilot hover box azimuth position. Monitor HOD; memory location should
indicate negative for left and positive for right.
SIGNAL FUNCTION:
Displays azimuth reference for hover box. 48 FT equals main rotor diameter.
REMARKS: From FCC to symbol generator.
PASS:
If CONDITION is met, go to paragraph 14–108.
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–108 SIGNAL NAME:
PLT HOVER POS EL BOX (ACY) PLT POSBOX EL (ACZ)
MEMORY LOCATION: 000706
MEMORY DATA BIT(S):
4–12
(SCALAR)
CONDITION:
Displays pilot hover box elevation position. Monitor HOD; memory location should
indicate negative for down and positive for up.
SIGNAL FUNCTION:
Displays elevation reference for hover box. 48 FT equals rotor diameter.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if CONDITION is met: replace symbol generator (TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–109 SIGNAL NAME:
PLT TOP CUE DOT CONT
MEMORY LOCATION: 000706
MEMORY DATA BIT(S):
16
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Presents up cueing information for pilot.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if the second digit displayed on HOD is 1, 3, 5, or 7: replace symbol
generator (TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–110 SIGNAL NAME:
PLT RT CUE DOT CONT
MEMORY LOCATION: 000705
MEMORY DATA BIT(S):
17
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Presents right cueing information for pilot.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if the first digit displayed on HOD is 4,5, 6, or 7: replace symbol generator
(TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
14–111 SIGNAL NAME:
PLT BOT CUE DOT CONT
MEMORY LOCATION: 00706
MEMORY DATA BIT(S):
18
(BINARY)
CONDITION:
(None)
SIGNAL FUNCTION:
Presents down cueing information for pilot.
REMARKS: From FCC to symbol generator.
PASS:
Location of fault if the first digit displayed on HOD is 2, 3, 6, or 7: replace symbol generator
(TM 11–1520–238–23–2).
FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).
