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ADS AIR DENSITY RATIO | Up
TM-1-1520-238-T-3 Army Model AH-64 Helicopter (NSN
1520-01-106-9519) (EIC: RHA) Multiplex Read Codes Manual | Next
CHAPTER 3 DIGITAL AUTOMATIC STABILIZATION EQUIPMENT (DASE) |
TM 1–1520–238–T–3
2–4
Change 4
2–10 SIGNAL NAME:
ADS LONG VEL
MEMORY LOCATION: 002140
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; zero velocity should be indicated on the ground.
SIGNAL FUNCTION:
Sends longitudinal velocity data to FCC and stabilator control units (SCUs).
REMARKS: From ADP through DASEC to FCC and SCUs.
PASS:
If CONDITION corresponds to proper velocity indication, go to paragraph 2–11.
FAIL: Location of fault: ADP, wiring from ADP to aft avionics module, aft avionics module, wiring to
DASEC, DASEC. Troubleshoot wiring to isolate fault (TM 9–1230–476–20–2).
2–11 SIGNAL NAME:
OAS SIDESLIP ANGLE
MEMORY LOCATION: 002137
MEMORY DATA BIT(S):
4–19 (ACY) 4–15 (ACZ)
(SCALAR)
CONDITION:
Monitor HOD; zero velocity should be indicated on the ground.
SIGNAL FUNCTION:
Sends ADS sideslip angle data to FCC.
REMARKS: From ADP through DASEC to FCC.
PASS:
If CONDITION corresponds to proper sideslip indication, refer to TM 9–1230–476–20–2.
FAIL: Location of fault: ADP, wiring from ADP to DASEC, DASEC. Troubleshoot wiring to isolate fault
(TM 9–1230–476–20–2).
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