TM 1-1510-225-MTF
TROUBLESHOOTING GUIDE H - FLIGHT CON-
TROLS
CONDITION
PROBABLE CAUSE
For complete troubleshooting of autopilot system, refer to
Allied Signal autopilot maintenance manual.
TROUBLESHOOTING GUIDE I - NOT APPLICABLE
TROUBLESHOOTING GUIDE J - VIBRATIONS
CONDITION
PROBABLE CAUSE
J1.
Engine vibration.
a. Propeller damaged or blade angle slipped.
b. Loose engine mounting bracket bolts.
c. Compressor damaged.
d. Turbine damaged.
TROUBLESHOOTING GUIDE K -
COMMUNICATION/NAVIGATION EQUIPMENT
CONDITION
PROBABLE CAUSE
K1.
Interphone system: No audio signals heard in
headset.
a. No power to audio system.
b. Defective microphone.
c. Defective control wheel microphone switch.
d. Defective foot microphone switch.
e. Defective headset-microphone cord or jack.
f. Defective microphone jack.
g. Defective audio control panel.
3-25
