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 on Cessna aircraft include a detached flap motor wire bundle causing chafing in the 172R and a reminder for critical 100-hour elevator torque tube inspections on the 208B to check for rivet concerns.
• Multiple magneto models (Slick 6351, Slick 4371, Bendix S6RN-1208) exhibited various internal mechanical failures, such as improperly spaced distributor gears, unseated rotor gears causing internal damage, and broken contactor rivets.

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