Airworthiness Directive · Amendment 39-18028 · Oxygen
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 787-8 airplanes, certificated in any category, as identified in Boeing Alert Service Bulletin B787-81205-SB350001-00, Issue 001, dated August 22, 2013.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 airplanes. This AD was prompted by a report indicating that, on a different Boeing airplane model, there was an oxygen-fed fire, which caused extensive damage to the flight deck. This AD requires replacing the low-pressure oxygen hoses with non- conductive hoses in the crew oxygen system. We are issuing this AD to prevent inadvertent electrical current from passing through an internal, anti-collapse spring of the low pressure oxygen hose, which can cause the low-pressure oxygen hose to melt or burn, leading to an oxygen-fed fire and/or smoke beneath the flight deck in the forward electronics equipment bay.
For airplanes identified in Boeing Alert Service Bulletin B787-81205-SB350001-00, Issue 001, dated August 22, 2013: Within 60 months after the effective date of this AD, rework the crew oxygen distribution manifold assembly from part number (P/N) 4421086-101 to P/N 4421086-102, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin B787-81205-SB350001-00, Issue 001, dated August 22, 2013; and B/E Aerospace Service Bulletin 4421086-35-001, Rev. 002, dated July 9, 2013; except as specified in paragraph (i) of this AD.
For airplanes identified as Group 2 in Boeing Alert Service Bulletin B787-81205-SB350001-00, Issue 001, dated August 22, 2013: Within 60 months after the effective date of this AD, replace the forward crew oxygen supply hose with a new non-conductive forward oxygen supply hose, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin B787-81205-SB350001-00, Issue 001, dated August 22, 2013.
Paragraph III.A., “Verification,” of B/E Aerospace Service Bulletin 4421086-35-001, Rev. 002, dated July 9, 2013, has a typographical error. The last sentence in that paragraph states, “If the decal shows PN 4421086-101, continue with the retrofit steps in paragraph II.B.” The sentence should refer to paragraph III.B. of B/E Aerospace Service Bulletin 4421086-35-001, Rev. 002, dated July 9, 2013.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Aircraft
