Airworthiness directives › 2012-12-19
AD 2012-12-19 Airworthiness Directives; the Boeing Company Airplanes
Models named: 777-200, -200LR, -300ER series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
(1) This AD applies to The Boeing Company Model 777-200, -200LR, and -300ER series airplanes; certificated in any category; as identified in Boeing Special Attention Service Bulletin 777-25-0482, Revision 1, dated February 21, 2012.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 60 months after the effective date of this AD, install new structural members and new tie rod(s) and attach fittings on the left and right sides of the lowered ceiling support structure, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-25-0482, Revision 1, dated February 21, 2012.
Unsafe condition
This AD was prompted by a report from the manufacturer indicating that the lowered ceiling support structure of Section 41, in airplanes incorporating the overhead space utilization (OSU) option, were found to be under-strength when subjected to a 9.0 g forward load. We are issuing this AD to prevent the forward lowered ceiling panels and support structure from becoming dislodged during a 9.0 g forward load and consequent injury to personnel or interference with an emergency evacuation.
Affected ADs
None.
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