Airworthiness directives › 2012-07-06
AD 2012-07-06 Airworthiness Directives; The Boeing Company Airplanes
Models named: 777-200, -200LR, -300, -300ER, 777F 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, -300ER, and 777F series airplanes, certificated in any category, with an original airworthiness certificate or original export certificate of airworthiness issued before September 1, 2010. (1) Airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or after September 1, 2010, must already be in compliance with the airworthiness limitations (AWLs) specified in this AD because those limitations were applicable as part of the airworthiness certification of those airplanes. (2) This AD requires revisions to certain operator maintenance documents to include new inspections. Compliance with these inspections is required by 14 CFR 91.403(c). For airplanes that have been previously modified, altered, or repaired in the areas addressed by these inspections, the operator may not be able to accomplish the inspections described in the revisions. In this situation, to comply with 14 CFR 91.403(c), the operator must request approval for an alternative method of compliance according to paragraph (j) of this AD. The request should include a description of changes to the required inspections that will ensure the continued damage tolerance of the affected structure.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) Within 12 months after the effective date of this AD, revise the maintenance program by incorporating the information in Subsection B, Airworthiness Limitations—Structural Inspections, of Section 9, “Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs),” D622W001-9, Revision July 2011, of the Boeing 777 Maintenance Planning Data (MPD) Document, except as provided by paragraph (h) of this AD. (2) The initial compliance time for the inspections is within the applicable times specified in Subsection B, Airworthiness Limitations—Structural Inspections, of Section 9, of “Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs),” D622W001-9, Revision July 2011, of the Boeing 777 Maintenance Planning Data (MPD) Document, or within 18 months after the effective date of this AD, whichever occurs later, or within the applicable time specified in Subsection B, Airworthiness Limitations—Structural Inspections, of Section 9, “Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs),” D622W001-9, Revision July 2011, of the Boeing 777 Maintenance Planning Data (MPD) Document, from the time of installation for new parts. (3) Reports specified in Section 9, “Airworthiness Limitations (AWLs) and Certification Maintenance Requirements (CMRs),” D622W001-9, Revision July 2011, of the Boeing 777 Maintenance Planning Data (MPD) Document may be submitted within 10 days after the airplane is returned to service, instead of 10 days after each individual finding as specified in this document.
Unsafe condition
This AD was prompted by a new revision to the airworthiness limitations of the maintenance planning document. We are issuing this AD to ensure that fatigue cracking of various principal structural elements (PSEs) is detected and corrected; such fatigue cracking could adversely affect the structural integrity of these airplanes.
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