Rivets And More

During a scheduled inspection, the wire bundle mount (p/n S2606-2) holding the flap motor wire harness was found detached from the rib in the right wing, allowing the wire bundle to chafe into the inspection panel support on the wing. The wire bundle had two wires which were chafed completely through the insulation, allowing contact with the inspection panel support. Inspecting these mounts and replacing them as needed is recommended.

Key Takeaways:

• Maintenance issues were reported for Cessna aircraft, including chafing flap motor wires due to a detached mount in a 172R, and a reminder for mandatory 100-hour elevator torque tube inspections for the 208B.
• Several magneto defects were identified: a Slick 6351 had an improperly spaced distributor gear, while Slick 4371 magnetos suffered from unseated rotor gears causing internal damage and intermittent operation.
• A Bendix S6RN-1208 magneto experienced a broken contactor rivet, leading to ignition problems, with speculation about the rivet's insufficient strength.

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