Squawk Box

October 2016 Issue

Aircraft Mufflers

The following information is derived from the FAA’s Service Difficulty Reports and Aviation Maintenance Alerts.

Pilot observed smoke in the cockpit, declared emergency and landed normally. Inspection of the right engine compartment revealed the muffler’s aft wall was missing and exhaust was directed onto the battery box. Hot exhaust melted the battery and battery contactor, clock fuse holder, both battery cables and boots. The gascolator push/pull control knob was melted.

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