Airworthiness directives › 2013-08-09
AD 2013-08-09 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; as identified in Boeing Special Attention Service Bulletin 777-35-0024, dated September 1, 2011.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Within 36 months after the effective date of this AD, do the applicable actions in paragraph (g)(1) or (g)(2) of this AD. (1) For Groups 1-6, 8, and 9 airplanes, as identified in Boeing Special Attention Service Bulletin 777-35-0024, dated September 1, 2011: Do a detailed inspection of certain areas of the airplane oxygen system to ensure clamshell couplers are installed and fully latched, and perform and meet the requirements of the low pressure leak test, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-35-0024, dated September 1, 2011. (2) For Group 7 airplanes, as identified in Boeing Special Attention Service Bulletin 777-35-0024, dated September 1, 2011: Perform and meet requirements of the low pressure leak test, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-35-0024, dated September 1, 2011.
Unsafe condition
This AD was prompted by a report that during a test of the oxygen system, an operator found that the passenger oxygen masks did not properly flow oxygen and that a loud noise occurred in the overhead area, which was caused by the flex line separating from the hard line due to a missing clamshell coupler. We are issuing this AD to prevent the oxygen system flex line from separating from the hard line, which could cause an oxygen leak and a drop in the oxygen system pressure, resulting in improper flow of oxygen through the passenger masks and injury to passengers if emergency oxygen is needed.
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