Proper Inspection and Maintenance the Exhaust Components FAA SAIB CE 04-22

by FAA Aircraft Certification Service

This Special Airworthiness Information Bulletin (SAIB) advises you, owners and operators of reciprocating engine powered airplanes and anyone else who may deal with exhaust system components, of the importance and need to properly inspect and maintain the components. You can apply our recommendations to any reciprocating engine powered airplane’s exhaust system components.

Review of accident/incident reports reveal that there have been numerous fatalities and injuries to pilots and passengers as a result of exhaust system component failures. We have identified the probable causes for these accidents and incidents as:

  • Carbon Monoxide (CO) poisoning
  • Partial or complete loss of engine power
  • Fire
  • A combination of the above
We received a Safety Recommendation concerning a muffler internal failure of a cone on a Cessna 207 airplane. The cone blocked the exhaust gas outlet flow resulting in engine power loss on takeoff. This muffler configuration is common or similar to many other general aviation airplane mufflers.

We want to emphasize the safety hazards and potential dangers of inadequate and infrequent inspections and of a lack of a routine preventative maintenance on exhaust system components between interval inspections. You should regard any exhaust system component failure as a severe hazard...

Click here to read the full FAA Special Airworthiness Information Bulletin, SAIB CE 04-22.

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