Replace mufflers on reciprocating engine airplanes with more than 1,000 SAIB CE-10-33
The report shows that after researching National Transportation Safety Board (NTSB) accidents related to carbon monoxide (CO) poisoning, the muffler system was the top source of CO. For the CO-related cases where the muffler was identified as the source of the CO leakage, 92 percent had a muffler with more than 1,000 hours of service.
The Federal Aviation Administration tasked Wichita State University to conduct research that focuses on carbon monoxide safety issues as they apply to general aviation products. A technical report titled “Detection and prevention of carbon monoxide exposure in General Aviation Aircraft, Document No. DOT/FAA/AR-09/49, dated October 2009” is available from the National Technical Information Services using the contact information noted below and is also available electronically at http://www.tc.faa.gov/its/worldpac/techrpt/ar0949.pdf