What damage to an aluminum alloy propeller blade can be repaired by a Powerplant-rated mechanic?

What damage to an aluminum alloy propeller blade can be repaired by a Powerplant-rated mechanic?

• A. Large dents in the blade
• B. Cracks near the hub
• C. Small roughness, nicks, scratches in leading edge
• D. Corrosion along the trailing edge

Answer: (C)

Minor leading-edge surface damage on an aluminum alloy propeller blade is the type of flaw a Powerplant-rated mechanic is allowed to repair. Small roughness, nicks, and scratches on the leading edge are superficial and can be corrected by light blending and refinishing within approved limits, preserving the blade’s aerodynamic shape and structural integrity. Larger dents indicate more substantial material deformation, cracks near the hub signal potential structural failure in the root region, and corrosion along the trailing edge points to deeper material weakening—each requiring a propeller repair station or overhaul. So the damage that fits within a Powerplant-rated mechanic’s scope is the small leading-edge surface imperfections.

Minor leading-edge surface damage on an aluminum alloy propeller blade is the type of flaw a Powerplant-rated mechanic is allowed to repair. Small roughness, nicks, and scratches on the leading edge are superficial and can be corrected by light blending and refinishing within approved limits, preserving the blade’s aerodynamic shape and structural integrity. Larger dents indicate more substantial material deformation, cracks near the hub signal potential structural failure in the root region, and corrosion along the trailing edge points to deeper material weakening—each requiring a propeller repair station or overhaul. So the damage that fits within a Powerplant-rated mechanic’s scope is the small leading-edge surface imperfections.