TM 55-1510-221-MTF
a.
Defective radio magnetic indicator.
b.
Defective horizontal situation indicator.
K27. Pilot's radio magnetic indicator heading does not agree with
copilot's horizontal situation indicator heading within two
degrees.
a.
Defective radio magnetic indicator.
b.
Defective horizontal situation indicator.
K28. VOR receiver inoperative.
a.
No power to equipment.
b.
Defective VOR control panel.
c.
Defective VOR receiver.
K29. With VOR receiver operating, course deviation bars on
course deviation indicators and radio magnetic indicator
needles do not deflect.
a.
Defective VOR receiver
b.
Defective VOR control panel
c.
Defective relays
K30. With VOR receiver operating, course deviation bars on
course deviation indicators do not deflect (radio magnetic
indicator needles operate properly).
a.
Defective NAV select switch on instrument panel.
b.
Defective course deviation indicator switching relay.
K31. Radar inoperative.
a.
System circuit breaker tripped.
b.
Defective radar control-indicator.
c.
Defective radar receiver-transmitter.
d.
Defective antenna.
K32. Radar antenna does not scan.
a.
No power to radar antenna.
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