T-45C TS, ADV & IUT ENG-20
Flight Instruments Malfunctions
c.
HUD
NOTE: AV BIT advisory is not presented on the HUD;
only on MFD displays.
(1) Velocity vector is removed
(2) Waterline symbol is displayed
(3) Barometric altitude is no longer filtered
d. Check standby cockpit instrument indications
e. Cross-check navigation to assure proper orientation
(1) TACAN, VOR, ILS (as appropriate)
(2) ARTCC, TRACON, RAPCON, ARRIVAL/DEPARTURE
controllers, etc. (request assistance, as appropriate)
(3) Visual landmarks (also use when possible)
f.
ADI, HSI, and HUD displays will automatically revert to normal
operation with full functionally, once fault is corrected
II. Pitot static system
Fig 2: Pitot Static
A. Standby airspeed indicator failure
System: Summary of
Malfunction Indica-
1. Indication: pointer drops to zero, fluctuates, or freezes in position
tions and Verifications
2. Verifications
a. Cross-check indicator in other cockpit
b. Airspeed/AOA cross-check
c.
Cross-check with other aircraft information
3. Effect on flight safety: unreliable airspeed indications
NOTE: You can use AOA to compensate for loss
of airspeed indications.
B. Standby altimeter failure
1. Indications
a. Pointer freezes in position
b. Erroneous readings
Original (9-98)
Page 20-6
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