AUTO GYRO Cavalon Maintenance Manual page 237

Aircraft AutoGyro
Maintenance Manual Cavalon 915 iS / 916 iS
61-20-00 1-1 TROUBLE-SHOOTING: HTC Propeller
GENERAL, REFERENCES AND REQUIREMENTS
Propeller repair.
Surface damage not tearing through the glass or carbon fibre, or splitting through the mould line (middle of the
leading edge along the blade), may be repaired using suitable epoxy resin, or superglue and carbon. If the
surface is damaged from excess exposure to water (rain) in flight, then use of propeller protection tape fitted to
the leading edge may be considered. Fitment will lead to a small performance deterioration. Heat on the tape
during fitment will allow easier fitting along the curved edge. If fitted, the integrity of this tape must be examined
at each 100hr/Annual inspection. There must be no air-bubbles under the tape, no lifting of any edge, or any
deterioration (e.g. splitting) of the tape itself. Should the tape installation be defective it may be replaced
(individual blades acceptable). Follow the product fitting instructions.
Propeller balance.
A well balanced propeller will significantly improve the engine and ancillary component service life. The Rotax
recommended maximum out of balance force on the propeller shaft is 0.1ips.
SPECIAL TOOLS AND CONSUMABLE MATERIALS
Q-Bond is a suitable material for repairing light leading edge damage.
PRECAUTIONS AND SAFETY MEASURES
Follow the instructions given with the adhesive.
Record the repair in the aircraft documentation
PROCEDURES
Blade repair
The area must be thoroughly cleaned of insect debris and dirt, and abraded to give a good fresh key to bond into.
Mix and load the epoxy onto the blade as per the adhesive instructions.
Superglue repairs using materials such as Q-Bond are built up in stages, a small drop of glue followed by a
sprinkle of carbon or charcoal (which instantly sets the adhesive). Build up in layers to the thickness required
Once the adhesive is fully cured, flat back to the original blade profile and polish in for best performance
Part E – 61-20-00 1-1
AMM-CV-915iS/916iS-EN- Page 1 of 2
E-2023-12