NTSB -- NTSB Safety Recommendation A-12-7

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NTSB SAFETY RECOMMENDATION

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National Transportation Safety Board

Washington, DC 20594

February 27, 2012

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NTSB Safety Recommendation A-12-7

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The National Transportation Safety Board makes the following recommendation to the Federal Aviation Administration:

Require repetitive inspection of Engine Components, Inc. cylinder assemblies produced between May 2003 and October

2009 (serial numbers 7709 through 52884) installed on Teledyne Continental Motors model 520 and 550 engines and

removal of these cylinder assemblies once they reach the engine manufacturer’s recommended normal time (hours) in

service between overhauls. (A-12-7)

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The complete recommendation letter is available on the Web at the URL indicated above.

The letter is in the Portable Document Format (PDF) and can be read using the Acrobat Reader 5.0 or later from Adobe

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An archive of recommendation letters is available at http://www.ntsb.gov/recs/letters/letters.htm.

Electronic versions of letters may or may not include enclosures; however, related publications, accident

briefs, and aviation accident synopses may be found on the NTSB website.

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