Airworthiness Directive · Amendment 39-22798 · Fuel
The Boeing Company Airplanes
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 Alert Requirements Bulletin 777-47A0007 RB, dated November 21, 2023.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 777 airplanes. This AD was prompted by a determination that the nitrogen enriched air distribution system (NEADS) cover plate assembly attached to a certain vent stringer in the center wing tank was installed without a designed electrical bond. This AD requires installing electrical bonding and grounding, installing the cover plate assembly with new fasteners, and revising the existing maintenance or inspection program, as applicable, to incorporate new airworthiness limitations. 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 the “Compliance” paragraph of Boeing Alert Requirements Bulletin 777-47A0007 RB, dated November 21, 2023, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 777-47A0007 RB, dated November 21, 2023.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 777-47A0007, dated November 21, 2023, which is referred to in Boeing Alert Requirements Bulletin 777-47A0007 RB, dated November 21, 2023.
(1) Where the “Effectivity” paragraph and Compliance Time columns of the tables in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 777-47A0007 RB, dated November 21, 2023, refer to the original issue date of Requirements Bulletin 777-47A0007 RB, this AD requires using the effective date of this AD.
(2) Where the compliance time for “ACTION 3: Incorporate Maintenance Planning Data (MPD),” in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 777-47A0007 RB, dated November 21, 2023, refers to before further flight after accomplishing ACTION 1 and ACTION 2, this AD requires incorporating the MPD within 60 days after the effective date of this AD.
After the existing maintenance or inspection program has been revised as required by paragraph (g) of this AD, no alternative actions (e.g., inspections), intervals, or CDCCLs may be used unless the actions, intervals, and CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (j) of this AD.
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
