TM 55-1510-219-MTF
K40.
Radar range does not vary when RANGE switch is
changed to various positions.
a.
Defective radar control-indicator.
K41.
Transponder cannot be interrogated or provides
unsatisfactory response.
a.
Mode C not set or defective.
b.
Defective transponder.
c.
Defective antenna.
d.
Defective wiring.
e.
Defective encoding altimeter.
3-38
