CNI System Malfunctions
T-45C TS, ADV & IUT ENG-22
D. TACAN distance measurement equipment (DME) failure
1.8.1.9.5.1
1. Indications
a. TACAN DME and time-to-go blanked in TACAN data
block
b. TACAN symbol blanked from HSI
c. Distance and time-to-go on HUD blanked
2. Verifications
a. Verify TACAN receiver control panel settings
b. Verify navigation control is set for crewstation you
are occupying
c. Verify same indications present in other cockpit
d. Verify with other aircraft, if available
e. Verify range from waypoint data or ATC
f. No TACAN ident
g. BIT fails
3. Effects on flight safety
a. Possible navigation errors
b. Reduced approach capabilities
E. VHF omni range (VOR) failure 1.8.1.9.8.1
1. Indications
a. VOR bearing, bearing pointer and center course line
are blanked
2. Verifications
a. Verify VOR/ILS receiver control panel settings
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