NTSB issues safety recommendations to FAA.

Press Release Summary:



NTSB recommendations include A-09-108, requiring operators of PT6A-34, -35, and -36 engines to incorporate reliability standards, noted in current service bulletin, into maintenance programs. Others include A-09-109 for evaluating Portland Flight Standards District Office's surveillance of such programs, and A-09-110, for resolving differences between AC 120-17A and AC 120-16E. Following this, NTSB recommends review of existing on-condition programs. NTSB letter is available on Web/PDF.



Original Press Release:



NTSB Safety Recommendations A-09-108 through -111



The National Transportation Safety Board recommends that the Federal Aviation Administration:

Require all operators of PT6A-34, -35, and -36 engines, including those using on-condition maintenance programs, to incorporate the reliability standards, particularly those concerning life-limited components, noted in the most current service bulletin into their engine maintenance programs. (A-09-108)

Evaluate the effectiveness of the Portland Flight Standards District Office's surveillance of maintenance programs and implement necessary changes so that inadequate maintenance programs are identified and improved. (A-09-109)

Resolve the differences between Advisory Circular (AC) 120-17A and AC 120-16E in regard to Federal Aviation Administration philosophy and use of on-condition maintenance programs. (A-09-110)

Once the differences noted in Safety Recommendation A-09-110 are resolved, review existing on-condition maintenance programs to ensure that they are compatible with the most current accepted philosophy. (A-09-111)

http://ntsb.gov/recs/letters/2009/A09_108_111.pdf

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 (http://www.adobe.com/prodindex/acrobat/readstep.html).

An archive of recommendation letters is available at 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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