Saw this on preflight back from Oshkosh. It looks like the tab that is on the exhaust pipe should have been sandwiched by both halves of the muff and fastened with the bolt. Looks like a miss.
1963 Cherokee 180 B.
Oops Don't worry, money will fix it, lol.
Wright Brothers Master Pilot, FAA Commercial Pilot
Aviation Director, Piper Owner Society Forum Moderator and Pipers Author.
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