TM 55-1510-215-MTF
K44. Radar range does not vary when RANGE switch is changed
to various positions.
a.
Defective radar control-indicator.
K45. Radar control-indicator does not display navigation data,
weather display is normal.
a.
Defective GRAPHICS switch.
b.
Defective interface unit.
K46. TACAN inoperative.
a.
No power to equipment.
b.
Defective TACAN control panel.
c.
Defective TACAN receiver-transmitter.
d.
Defective TACAN azimuth computer.
e.
Defective antenna or cabling.
K47. With TACAN operating, vertical needles of HSI's and double
needle pointers of RMI's do not deflect.
a.
Defective TACAN receiver-transmitter.
b.
Defective TACAN azimuth computer.
c.
Defective TACAN control panel.
d.
Defective TAC A/A switch.
K48. Copilot's HSI lateral deviation indicator does not deflect
properly, all other indications normal.
a.
Defective converter.
3-47