Propeller Owner’s Manual
147
TESTING AND TROUBLESHOOTING
61-00-47
Page 4-1
Rev. 6 May/20
TESTING AND TROUBLESHOOTING - CONTENTS
Checks .................................................................4-3
A. Operational Checks ...........................................................4-3
3. Troubleshooting .......................................................................4-4
A. Hunting and Surging ..........................................................4-4
B. Engine Speed Varies with Airspeed ...................................4-5
C. Loss of Propeller Control ...................................................4-6
D. Failure to Feather (or feathers slowly) ...............................4-6
E. Failure to Unfeather ...........................................................4-6
F. Start Locks Fail to Latch on Shutdown .............................4-7
G. Vibration ............................................................................4-8
H. Propeller Overspeed/Avoidance ........................................4-9
I. Propeller Underspeed ........................................................4-9