TM 55-1510-221-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
G. AVIONICS FLIGHT CHECKS (CONT)
i.
Distance and Time to Next Waypoint - Check as
follows:
(1)
Data selector - DIS/TIME
(2)
Left-hand display - Read distance to
next waypoint to the nearest
nautical mile. Compare with TA-
CAN readout
(3)
Right-hand display - Read time to
reach next waypoint at present ground
speed to the nearest tenth of a minute.
Compare with TACAN readout when
tuned to a VORTAC station located at the
next waypoint.
j.
Distance to any TACAN station -
Check as follows.
(1)
Data selector - DIS/TIME.
(2)
Keys 7 and 9 - Depress
simultaneously.
(3)
FROM-TO display - Read
flashing number of TA-
CAN station being used for
navigation
(4)
Left-hand display - Read
distance to the TACAN station
to the nearest nautical mile.
(5)
Right-hand display - Read time
to next waypoint.
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