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PROPELLER OVERHAUL PROCESS
- Propeller is received, paperwork packet is opened and will follow
the components through out the servicing. The width, thickness, and
diameter are measured to verify that the blades meet the manufacturer
specifications, and the Type Certificate for the aircraft.
- The propeller is then disassembled and cleaned.
- Hub components are inspected by our certified Level 2 inspectors,
using magnetic particle, liquid penetrant, and eddy current procedures.
The components are dimensionally checked to verify they meet the
manufacturers specifications. The aluminum parts that require corrosion
protection are then alodined and painted. The steel parts that require
corrosion protection are cadmium plated to the current military specifications.
Blades are cleaned, and inspected by our certified level 2 inspectors,
using liquid penetrant and eddy current procedures. Precise grinding
and machining, remove corrosion, pitting, and scratches, on the blades,
and replaces the proper airfoil on the leading edge. Removal of these
stress risers restores the strength and integrity of the blades.
Blade width, thickness, face alignment, edge alignment, angles and
diameter are once again checked and held to strict tolerances. This
assures a smooth operating propeller. If blades were involved in a
strike and met the standards provided by the manufactures, they would
be straightened at this time. Corrosion protection and factory specified
paint are applied for long term protection. Blades are then balanced
and are ready for final assembly.
- Precise assembly of hub and blade components complete the overhaul. Blade angles are set for the aircraft, and the assembly is statically balanced. The assembly is now ready for installation on the aircraft.