PLT TORQUE FLASHBOX CONT

TM-1-1520-238-T-3 Army Model AH-64 Helicopter (NSN
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TM 1–1520–238–T–3 14–32 14–137 SIGNAL NAME: PLT TORQUE FLASHBOX CONT MEMORY LOCATION: 000722 MEMORY DATA BIT(S): 16 (BINARY) CONDITION: (None) SIGNAL FUNCTION: Flashes torque box when torque=98. 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). 14–138 SIGNAL NAME: PLT VEL VECTOR CONT MEMORY LOCATION: 000722 MEMORY DATA BIT(S): 17 (BINARY) CONDITION: (None) SIGNAL FUNCTION: Activates pilot velocity vector. REMARKS: From FCC to symbol generator. PASS: If the first digit displayed on HOD is 1, 3, 5, or 7, go to paragraph 14–139. FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1). 14–139 SIGNAL NAME: PLT VEL VECTOR AZ MEMORY LOCATION: 000723 MEMORY DATA BIT(S): 4–10 (SCALAR) CONDITION: Displays velocity vector azimuth on VDU. Monitor HOD; memory location should indicate negative for decrease and positive for increase. SIGNAL FUNCTION: Displays velocity vector azimuth reference from PNVS LOS proportional to aircraft velocity. REMARKS: From FCC to symbol generator. PASS: If CONDITION is met, go to paragraph 14–140. FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1). 14–140 SIGNAL NAME: PLT VEL VECTOR EL MEMORY LOCATION: 000723 MEMORY DATA BIT(S): 11–17 (SCALAR) CONDITION: Displays velocity vector elevation on VDU. Monitor HOD; memory location should indicate negative for decrease and positive for increase. SIGNAL FUNCTION: Displays velocity vector elevation reference from PNVS LOS proportional to aircraft velocity. REMARKS: From FCC to symbol generator. PASS: If CONDITION is met, go to paragraph 14–141. FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1). 14–141 SIGNAL NAME: PLT ACCEL CUE CONT MEMORY LOCATION: 000722 MEMORY DATA BIT(S): 18 (BINARY) CONDITION: (None) SIGNAL FUNCTION: Activates pilot acceleration cue. REMARKS: From FCC to symbol generator. PASS: If the first digit displayed on HOD is 2, 3, 6, or 7, go to paragraph 14–142. FAIL: Location of fault: replace FCC (TM 9–1230–476–20–1).

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