Airworthiness directives › 2013-07-11
AD 2013-07-11 Airworthiness Directives; The Boeing Company Airplanes
Models named: 777-200, -200LR, -300, -300ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes; certificated in any category; as identified in Boeing Service Bulletin 777-53A0054, Revision 1, dated November 4, 2010.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
This paragraph restates the requirements of paragraph (g) of AD 2009-24-08, Amendment 39-16096 (74 FR 62217, November 27, 2009), with new service information and a new exception. (1) At the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 777-53A0054, dated August 7, 2008, except as provided in paragraphs (h) and (j) of this AD: Do detailed exploratory inspections for scribe lines in the skin along lap joints, butt joints, certain external doublers, and the large cargo door hinges, except as specified in paragraph (n)(3) of this AD. Do all applicable related investigative and corrective actions at the times specified in Boeing Alert Service Bulletin 777-53A0054, dated August 7, 2008, by accomplishing all actions specified in the Accomplishment Instructions of Boeing Alert Service Bulletin 777-53A0054, dated August 7, 2008; or Boeing Service Bulletin 777-53A0054, Revision 1, dated November 4, 2010; except as specified in paragraphs (i) and (n)(3) of this AD. As of the effective date of this AD, use only Boeing Service Bulletin 777-53A0054, Revision 1, dated November 4, 2010, to do the actions required by this paragraph. (2) The inspection exceptions described in NOTES 1.- 5. in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 777-53A0054, dated August 7, 2008; and NOTES 1. through 6. in paragraph 1.E., “Compliance,” of Boeing Service Bulletin 777-53A0054, Revision 1, dated November 4, 2010; apply to paragraph (g)(1) of this AD.
Unsafe condition
This AD was prompted by a determination that scribe lines could occur where external decals are installed or removed across lap joints, large cargo door hinges, or external doublers. We are issuing this AD to detect and correct scribe lines which can develop into fatigue cracks in the skin. Undetected fatigue cracks can grow and cause sudden decompression of the airplane.
Affected ADs
This AD supersedes AD 2009-24-08, Amendment 39-16096 (74 FR 62217, November 27, 2009).
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