Airworthiness directives › 2012-09-04
AD 2012-09-04 Airworthiness Directives; The Boeing Company Model 767-200, -300, -300F, and -400ER Series Airplanes
Models named: 767-200, -300, -300F, -400ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to Model 767-200, -300, -300F, and -400ER series airplanes, certificated in any category; as identified in Boeing Service Bulletin 767-53A0100, Revision 3, dated February 6, 2012. Note 1 to paragraph (c) of this AD: Supplemental Type Certificate (STC) ST01920SE ( http://rgl.faa.gov/Regulatory_and_Guidance_Library/rgstc.nsf/0/082838ee177dbf62862576a4005cdfc0/$FILE/ST01920SE.pdf ) does not affect the ability to accomplish the actions required by this AD. Therefore, for airplanes on which STC ST01920SE is installed, a “change in product” alternative method of compliance (AMOC) approval request is not necessary to comply with the requirements of 14 CFR 39.17. For all other AMOC requests, the operator must request approval for an AMOC according to paragraph (o) of this AD.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
These inspection requirements are retained from AD 2004-19-06 R1, Amendment 39-14313 (70 FR 58000, October 5, 2005). For Model 767-200, -300, and -300F series airplanes having line numbers 1 through 931 inclusive: Except as provided by paragraph (h) of this AD, prior to the accumulation of 15,000 total flight cycles, or within 3,000 flight cycles after November 1, 2004 (the effective date of AD 2004-19-06 R1, Amendment 39-14313, 70 FR 58000, October 5, 2005), whichever occurs later, perform a detailed inspection and eddy current inspection to detect cracking or corrosion of the fail-safe straps between the side fitting of the rear spar bulkhead at body station (BS) 955 and the skin, per Figure 2 of the Accomplishment Instructions of Boeing Alert Service Bulletin 767-53A0100, dated September 26, 2002; Boeing Alert Service Bulletin 767-53A0100, Revision 2, dated January 15, 2010; or Boeing Service Bulletin 767-53A0100, Revision 3, dated February 6, 2012. As of the effective date of this AD, use only Boeing Alert Service Bulletin 767-53A0100, Revision 3, dated February 6, 2012. Doing the inspections required by paragraph (i) of this AD terminates the requirements of this paragraph. (1) If no crack or corrosion is found, repeat the inspections thereafter at intervals not to exceed 6,000 flight cycles or 36 months, whichever occurs first, until paragraph (i) of this AD is done. (2) If any crack or corrosion is found, before further flight, repair per a method approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA; or using a method approved in accordance with paragraph (o) of this AD. (3) For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.”
Unsafe condition
This AD was prompted by additional reports of cracks in 51 fail-safe straps on 41 airplanes; we have also received a report of a crack found in the “T” fitting that connects the fail-safe strap to the outboard edge of the pressure deck. We are issuing this AD to detect and correct fatigue cracking or corrosion of the fail-safe straps and the “T” fittings, which could result in cracking of adjacent structure and consequent reduced structural integrity of the fuselage.
Affected ADs
This AD supersedes AD 2004-19-06 R1, Amendment 39-14313 (70 FR 58000, October 5, 2005).
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