AD 2018-02-04
Unsafe Condition
occurrences of cracks or broken welds in the connecting weld of the muffler body to muffler cuff that may allow carbon monoxide exhaust fumes into the cockpit heating system
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
an inspection of the muffler for leaking to identify cracks and replacement of the muffler
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Compliance Time
Within 50 flight hours
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Affected Aircraft
Aerospace Welding Minneapolis, Inc. mufflers, part numbers A1754001-23 and A1754001-25, installed on airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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