Cessna; 182Q; Burned Electrical Wire; ATA 2460
This discrepancy was found by a mechanic while cleaning the aircraft’s firewall after engine removal. An electrical cable (P/N D-PA13) between the auxiliary power and starter relays had burn marks indicative of arcing.

Immediately across from the damage was the pointed end of a sheet metal screw protruding through the firewall.

The function of this particular screw is for attachment of a plastic shield on the aft side of the firewall protecting the elevator cable pulley. This screw was reversed, allowing for its head to be on the forward side of the firewall.

The damaged cable was replaced with a new part.

Part Total Time: 4,642.0 hours.