OPERATION AND INSTALLATION MANUAL
EN-1320
6.0. INSPECTIONS
CAUTION: ALL REMOVAL, INSTALLATION AND REPAIR PROCEDURES MUST BE CARRIED
OUT BY PERSONNEL WITH APPROPRIATE QUALIFICATION.
NOTE: INSPECTIONS DESCRIBED IN THIS CHAPTER DO NOT SUPERSEDE INSPECTIONS
DESCRIBED IN AIRCRAFT AND ENGINE MANUFACTURER´S MANUALS.
6.1. PRE-FLIGHT CHECK
1) Perform before first flight in the day:
a) Visually inspect the carbon block for excessive wear. If excessive wear is noticed or
suspected, measure the clearance between the carbon block and the beta ring. Refer to
chapter “Installation and Operation Instruction” in this manual for side clearance limits.
b) Visually inspect the beta ring, feedback lever and other beta feedback components for
damage or excessive wear.
c) Inspect the slip ring for damage or excessive wear, if applicable. Check that visible
clearance exists between the feedback lever and the slip ring throughout 360 degrees of
slip ring rotation.
2) Perform before each flight:
a) Visually inspect the blades for damage. Remove all nicks, gouges and scratches before
further flight in accordance with FAA Advisory Circular 43.13-1B, or refer to the section
“Repair of nicks or gouges on blades” in this chapter.
b) Inspect the blades and the spinner for signs of lightning strike. Lightning strike is
indicated as discolored area inside the painted surface, signs of burning or melting,
chipped or missing material in place of lightning strike. Refer to the section “Lightning
strike” in this chapter, if lightning strike is found or suspected.
c) Inspect the blades for traces of grease or oil indicating the leakage from the blade
retention bearing.
NOTE:
A new or newly overhauled propeller may leak slightly during the first several hours of
operation. This leakage may be caused by the seating of seals and o-rings, and the
slinging of lubricants used during assembly. Such leakage should cease within the first
ten hours of operation.
If the leakage persists or increases, contact Avia Propeller.
d) Check the blades for excessive play in the retention bearing. Refer to the section “Loose
blades” in this chapter for blade play limits.
e) Check for loose or missing hardware.
f) Inspect the de-icers for damage and unsticking, if applicable.
g) After engine start-up, check the propeller speed control and operation according to the
procedure specified in the Pilot Operating Handbook (POH) for the aircraft.
Check for any abnormal vibration. If vibration occurs, shut the engine down, identify the
source of vibration and correct it before further flight. Refer to the section “Vibration” in
this chapter to the chapter “Troubleshooting” in this manual.
WARNING: ABNORMAL VIBRATION CAN INDICATE THE DAMAGE OF PROPELLER
BLADE OR BLADE BEARING COMPONENT. IT MAY LEAD TO IN-FLIGHT
BLADE SEPARATION AND CATASTROPHIC AIRCRAFT ACCIDENT.
61-10-20
INSPECTIONS
Page 6-1
2017-10-06
