TM 1-1510-224-MTF
K21.
Transponder cannot be interrogated or provides
unsatisfactory response.
a.
Mode C not set or defective.
b.
Air data computer defective.
c.
Defective transponder.
d.
Defective antenna.
e.
Defective coax.
f.
Defective wiring.
TROUBLESHOOTING GUIDE L - STABILITY AND
CONTROL SYSTEMS - NOT APPLICABLE
CONDITION
PROBABLE CAUSE
3-29/(3-30 blank)
