Airworthiness Directive · Amendment 39-17277 · Fuel
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 787-8 airplanes, certificated in any category, serial numbers 34485, 34486, 34488, 34490, 34493, 34494, 34497, 34502, 34506 through 34508 inclusive, 34514, 34515, 34521, 34744 through 34747 inclusive, 34822, 34824, 34829, 34832, 34834 through 34838 inclusive, 35938, 36276 through 36278 inclusive, 38319, 38320, 38330, 38466, 38471, 40748, and 40899.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 787-8 airplanes. This AD requires ensuring that lockwire is installed correctly on the engine fuel feed manifold couplings. This AD also requires inspecting the assembly of the engine fuel feed manifold rigid and full flexible couplings. This AD was prompted by reports of fuel leaks due to improperly assembled engine fuel feed manifold couplings. We are issuing this AD to detect and correct improperly assembled couplings, which could result in fuel leaks and consequent fuel exhaustion, engine power loss or shutdown, or leaks on hot engine parts that could lead to a fire.
Except as provided by paragraph (h) of this AD: Do the actions specified in paragraphs (g)(1) and (g)(2) of this AD, in accordance with Action 1) of Boeing Multi Operator Message MOM-MOM-12-0838-01B(R2), including Attachment A, dated November 25, 2012.
(1) Within 7 days after the effective date of this AD, ensure that the lockwire installation on the rigid and full flexible couplings is correct.
(2) Within 21 days after the effective date of this AD, inspect the rigid and full flexible couplings for correct assembly, including replacement of the o-rings with new o-rings, confirmation that the proper retainer rings are installed in the full flexible coupling, a general visual inspection for damage of the blade seals, and all applicable corrective actions. Do all applicable corrective actions before further flight.
(1) For airplanes on which the fuel couplings have been inspected before the effective date of this AD as specified in “Method 1: AMM Method” of Boeing Multi Operator Message MOM-MOM-12-0838-01B, dated November 11, 2012, which is not incorporated by reference in this AD; or Boeing Multi Operator Message MOM-MOM-12-0838-01B(R1), dated November 14, 2012, which is not incorporated by reference in this AD: A review of the airplane maintenance records is acceptable for compliance with the requirements of paragraph (g)(1) of this AD, if the records conclusively demonstrate that lockwire was installed correctly using a method equivalent to step 6.a. of Action 1) of Boeing Multi Operator Message MOM-MOM-12-0838-01B(R2), including Attachment A, dated November 25, 2012.
(2) For airplanes on which the fuel couplings have been inspected before the effective date of this AD as specified in “Method 2: Non-Invasive Method” of Boeing Multi Operator Message MOM-MOM-12-0838-01B, dated November 11, 2012, which is not incorporated by reference in this AD; or Boeing Multi Operator Message MOM-MOM-12-0838-01B(R1), dated November 14, 2012, which is not incorporated by reference in this AD: The actions specified in paragraph (g)(1) of this AD are not required.
(3) For airplanes on which the rigid fuel couplings have been inspected before the effective date of this AD as specified in “Method 1: AMM Method” or “Method 2: Non-Invasive Method” of Boeing Multi Operator Message MOM-MOM-12-0838-01B, dated November 11, 2012, which is not incorporated by reference in this AD; or Boeing Multi Operator Message MOM-MOM-12-0838-01B(R1), dated November 14, 2012, which is not incorporated by reference in this AD: The actions specified in paragraph (g)(2) of this AD are not required for the rigid fuel couplings only. However, the actions specified in paragraph (g)(2) of this AD are required for the full flexible couplings, even if inspected prior to the effective date of this AD as specified in Boeing Multi Operator Message MOM-MOM-12-0838-01B, dated November 11, 2012, which is not incorporated by reference in this AD; or Boeing Multi Operator Message MOM-MOM-12-0838-01B(R1), dated November 14, 2012, which is not incorporated by reference in this AD.
Boeing Multi Operator Message MOM-MOM-12-0838-01B(R2), including Attachment A, dated November 25, 2012, specifies reporting to Boeing any anomalies found during inspection of the assembly of the rigid and full flexible couplings, including anomalies of the lockwire installation. This AD does not require any report.
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
