Airworthiness directives › 2011-26-03
AD 2011-26-03 Airworthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and -300ER Series Airplanes
Models named: 777-200, -300, -300ER, -200LR, 777-200ER. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to The Boeing Company airplanes, certificated in any category, as identified in the applicable service information specified in paragraphs (c)(1), (c)(2), (c)(3), and (c)(4) of this AD. (1) For Model 777-200, -300, and -300ER airplanes: Boeing Service Bulletin 777-57A0050, Revision 2, dated May 14, 2009. (2) For Model 777-200 and -300 airplanes: Boeing Alert Service Bulletin 777-57A0051, dated May 15, 2006. (3) For Model 777-200, -300, and -300ER airplanes: Boeing Alert Service Bulletin 777-57A0057, Revision 1, dated August 2, 2007. (4) For Model 777-200, -200LR, -300, and -300ER airplanes: Boeing Alert Service Bulletin 777-57A0059, dated October 30, 2008. Note 1: Operators should consider any reference to Model 777-200ER airplanes identified in the service information specified in paragraphs (c)(1), (c)(2), (c)(3), and (c)(4) of this AD, as applicable, to be to the Model 777-200 airplanes designated by the type certificate data sheet.
Compliance
Comply with this AD within the compliance times specified, unless already done. Restatement of Requirements of AD 2010-24-12, Amendment 39-16531 (75 FR 78588, December 16, 2010)
Required actions
Within 60 months after January 20, 2011 (the effective date of AD 2010-24-12, amendment 39-16531 (75 FR 78588, December 16, 2010)), do the applicable actions specified in paragraph (g)(1), (g)(2), (g)(3), or (g)(4) of this AD. (1) For airplanes identified in Boeing Service Bulletin 777-57A0050, Revision 2, dated May 14, 2009: Install Teflon sleeving under the clamps of certain wire bundles routed along the fuel tank boundary structure and cap seal certain penetrating fasteners of the fuel tanks, in accordance with the Accomplishment Instructions of Boeing Service Bulletin 777-57A0050, Revision 2, dated May 14, 2009. (2) For airplanes identified in Boeing Alert Service Bulletin 777-57A0051, dated May 15, 2006: Cap seal certain penetrating fasteners of the fuel tanks, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 777-57A0051, dated May 15, 2006. (3) For airplanes identified in Boeing Alert Service Bulletin 777-57A0057, Revision 1, dated August 2, 2007: Do a general visual inspection to determine if certain fasteners are cap sealed and do all applicable corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 777-57A0057, Revision 1, dated August 2, 2007. Do all applicable corrective actions before further flight. (4) For Model 777-200, -300, and -300ER airplanes identified in Boeing Alert Service Bulletin 777-57A0059, dated October 30, 2008: Cap seal the fasteners in the center fuel tanks that were not sealed during production, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 777-57A0059, dated October 30, 2008.
Unsafe condition
This AD was prompted by fuel system reviews conducted by the manufacturer. We are issuing this AD to prevent electrical arcing on the fuel tank boundary structure or inside the main and center fuel tanks, which could result in a fire or explosion.
Affected ADs
This AD supersedes AD 2010-24-12, amendment 39-16531 (75 FR 78588, December 16, 2010).
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