Airworthiness directives › 2013-03-20
AD 2013-03-20 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, -200PF, -200CB, -300 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as required by paragraph (h)(1) of this AD, at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 757-57-0068, Revision 1, dated July 19, 2011: Do the actions specified in paragraphs (g)(1) and (g)(2) of this AD. (1) Perform a detailed inspection of the inboard and outboard main track downstop assemblies of slat numbers 1 through 10, excluding the outboard main track downstop assemblies of slat numbers 1 and 10, for correct assembly order and missing or damaged parts; perform a detailed inspection of all slat track housings for foreign object debris, visible damage, and missing parts; and do all applicable corrective actions; in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-57-0068, Revision 1, dated July 19, 2011, except as required by paragraphs (h)(1), (h)(2), and (h)(3) of this AD. Do all applicable corrective actions before further flight. (2) Apply torque to the main track down stop assembly nuts to make sure they have been correctly installed, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 757-57-0068, Revision 1, dated July 19, 2011.
Unsafe condition
This AD was prompted by reports of fuel leaking from the front spar of the wing through the slat track housing. We are issuing this AD to detect and correct incorrectly installed main track downstop assemblies, which, when the slat is retracted, could cause a puncture in the slat track housing and lead to a fuel leak and potential fire.
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