Airworthiness directives › 2017-19-10
AD 2017-19-10 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, -200PF, -200CB series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 757-200, -200PF, and -200CB series airplanes, certificated in any category, equipped with a main cargo door (MCD), except those airplanes that have been converted from a passenger to freighter configuration in accordance with Supplemental Type Certificate ST01529SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/9c0283b6ce0b9ff18625806b007340b9/$FILE/ST01529SE.pdf ).
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
At the later of the times specified in paragraphs (g)(1) and (g)(2) of this AD: Inspect the cam support assemblies of the MCD to determine whether part number (P/N) 69-23588-5, 69-23588-6, 69-23588-7, 69-23588-8, 69-23588-9, or 69-23588-10 is installed. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number(s) of the cam support assemblies of the MCD can be conclusively determined from that review. (1) Before the accumulation of 18,000 total flight cycles since installation of the MCD. If the flight cycles since installation of the MCD are not known, use total airplane flight cycles. (2) Within 2,743 flight cycles or 27 months after the effective date of this AD, whichever occurs later.
Unsafe condition
This AD was prompted by an analysis of the cam support assemblies of the MCD that indicated that the existing maintenance program for the cam support assemblies is not adequate to reliably detect cracks before two adjacent cam support assemblies could fail. We are issuing this AD to detect and correct cracking of the cam support assemblies of the MCD, which could result in reduced structural integrity of the MCD and consequent rapid decompression of the airplane.
Affected ADs
None.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1