CNI System Malfunctions
T-45C TS, ADV & IUT ENG-22
(4) All time-to-go data is removed
(5) AV BIT advisory displayed
on all MFDs in
lower right-hand corner
(6) DEGD is indicated on the BIT display sub-
menu
c. HUD
NOTE: An AV BIT advisory is never shown 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 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) Cross-check navigation with visual
landmarks when possible
f. ADI, HSI, and HUD displays will automatically
revert to normal operation with full functionality,
once fault is corrected
C. TACAN azimuth failure
1. Indications
a. Bearing and time-to-go blanked in TACAN data
block, bearing pointer, course line, TACAN symbol,
blanked on HSI display
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