Airworthiness directives › 2012-02-15
AD 2012-02-15 Airworthiness Directives; The Boeing Company Airplanes
Models named: 757-200, -200PF, -200CB, -300 series, -200CB series, 757-300 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, -200CB, and -300 series airplanes, certificated in any category, specified in paragraphs (c)(1) and (c)(2) of this AD. (1) Model 757-200, -200PF, and -200CB series airplanes, as identified in Boeing Special Attention Service Bulletin 757-24-0105, Revision 5, dated July 30, 2009. (2) Model 757-300 series airplanes, as identified in Boeing Special Attention Service Bulletin 757-24-0106, Revision 5, dated July 30, 2009.
Compliance
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Required actions
For Model 757-200, -200PF, and -200CB series airplanes identified in Boeing Special Attention Service Bulletin 757-24-0105, Revision 5, dated July 30, 2009; and for Model 757-300 series airplanes identified as Group 1 airplanes in Boeing Special Attention Service Bulletin 757-24-0106, Revision 5, dated July 30, 2009: Within 24 months after March 5, 2007 (the effective date for AD 2007-03-01, Amendment 39-14912 (72 FR 3939, January 29, 2007)), perform a general visual inspection for damage (including but not limited to chafing) of power feeder wire bundles W3312 and W3412 at front spar station 148.90 in the left and right wings, and a general visual inspection of the support clamps for those power feeder wire bundles to determine whether the clamps are properly installed, and, before further flight, do all applicable corrective actions. Do these actions by doing all of the applicable actions in accordance with the Accomplishment Instructions of the applicable service bulletin identified in Table 1 of this AD. After the effective date of this AD, only Boeing Special Attention Service Bulletin 757-24-0105, Revision 5, dated July 30, 2009 (for Model 757-200, -200CB, and -200PF series airplanes); or Boeing Special Attention Service Bulletin 757-24-0106, Revision 5, dated July 30, 2009 (for Model 757-300 series airplanes); may be used. Table 1—Acceptable Service Information for Paragraph (g) of This AD Model— Boeing Special Attention Service Bulletin— Revision— Dated— 757-200, -200CB, and -200PF series airplanes 757-24-0105 2 April 20, 2006. 757-200, -200CB, and -200PF series airplanes 757-24-0105 5 July 30, 2009. 757-300 series airplanes 757-24-0106 2 April 20, 2006. 757-300 series airplanes 757-24-0106 5 July 30, 2009.
Unsafe condition
This AD results from a report that a power feeder wire bundle chafed against the number six auxiliary slat track, causing electrical wires in the bundle to arc, which damaged both the auxiliary slat track and power feeder wires. The Federal Aviation Administration is issuing this AD to prevent arcing that could be a possible ignition source for leaked flammable fluids, which could result in a fire. Arcing could also result in a loss of power from the generator connected to the power feeder wire bundle, and consequent loss of systems, which could reduce controllability of the airplane.
Affected ADs
This AD supersedes AD 2007-03-01, Amendment 39-14912 (72 FR 3939, January 29, 2007).
Read the original on the Federal Register →
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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