T-45C TS, ADV & IUT ENG-20
Flight Instruments Malfunctions
NOTE: The fwd AOA indicator drives the FWD and AFT
cockpit indexer lights and the nose-gear mounted external
approach lights.
b. Check bulbs and dimmer control
c.
Cross-check with other aircraft or LSO
3. Effects on flight safety
a. Loss of secondary visual AOA indications
b. Loss of HOOK NOT DOWN warning signal
NOTE: The applicable indexer light in both cockpits and the
applicable external approach light will flash if the hook is not
extended and the HOOK BYPASS switch is in the CARRIER
position.
IV.
Independent instruments
Fig 4: Independent
A. Radar altimeter readout failure
Instruments: Summary
of Malfunction
1. Indications
Indications and
Verifications
a. Digital readout blank and R will remain
2. Verifications
a. Cross-check with other cockpit
b. Check BIT page for equipment status
c.
Cross-check with standby altimeter (below 5000 ft AGL)
and known terrain elevation
d. Cross-check with other aircraft information
e. An AV BIT will be displayed
NOTE: Both cockpit indicators will show blank indications
if the receiver/transmitter is the source of the malfunction.
3. Effect on flight safety
a. Inability to determine exact AGL at or below 5000 ft
b. Low altitude warning lost
B. Standby turn and slip indicator failure
1. Indications
Original (9-98)
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