Airworthiness Directive · Amendment 39-21306 · Equipment/furnishings
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes, certificated in any category, as identified in Boeing Special Attention Service Bulletin 777-25-0621, Revision 2, dated February 28, 2020.
The FAA is superseding Airworthiness Directive (AD) 2018-14- 02, which applied to certain The Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes. AD 2018-14-02 required an inspection for foam insulation on the dripshield above the overhead panel support structure and replacement if necessary. For certain airplanes, AD 2018- 14-02 also required replacement of foam insulation on the overhead panel support structure. This AD continues to require the actions in AD 2018-14-02, and, for certain airplanes, this AD requires an inspection of the foam insulation on the overhead panel support structure, and replacement if necessary. This AD was prompted by reports that additional areas of Boeing Material Specification (BMS) 8-39 flexible urethane foam were found on the overhead panel support structure in the flight compartment. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified by paragraph (h) of this AD: At the applicable times specified in paragraph 1.E., “Compliance,” of Boeing Special Attention Service Bulletin 777-25-0621, Revision 2, dated February 28, 2020, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Special Attention Service Bulletin 777-25-0621, Revision 2, dated February 28, 2020.
(1) Where Boeing Special Attention Service Bulletin 777-25-0621, Revision 2, dated February 28, 2020, uses the phrase “the Revision 2 date of this service bulletin,” this AD requires using “the effective date of AD 2018-14-02.”
(2) For any Group 1 Configuration 3 airplane as identified in Boeing Special Attention Service Bulletin 777-25-0621, Revision 2, dated February 28, 2020, no action is required by this AD, provided that airplane remains in that configuration.
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
