Airworthiness Directive · Amendment 39-22990 · Wings
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. This AD was prompted by a report of a 5-inch crack on the upper wing skin at a certain wing station of the right wing. This AD requires repetitive inspections for cracking of the upper wing skin common to certain fasteners and applicable on-condition actions. 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 777-57A0125 RB, dated July 25, 2023, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 777-57A0125, dated July 25, 2023, which is referred to in Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023.
(1) Where Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, uses the phrase “the original issue date of Requirements Bulletin 777-57A0125 RB,” this AD requires using the effective date of this AD.
(2) Where Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, specifies contacting Boeing for repair instructions: This AD requires doing the repair before further flight using a method approved in accordance with the procedures specified in paragraph (i) of this AD.
(3) Where note (a) of the tables in the “Compliance” paragraph and Accomplishment Instructions of Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, specifies that a “repair for any crack found on the left wing is terminating action to the repeat inspection on the left wing only,” or that a “repair for any crack found on the right wing is terminating action to the repeat inspection on the right wing only,” for this AD, performing a repair for any crack in accordance with the procedures specified in paragraph (i) of this AD terminates the repetitive inspections required by (g) of this AD at the repaired area only.
(4) For Model 777-300 (Group 3) airplanes, where Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, specifies an ultrasonic (UT) inspection of the upper wing skin common to fasteners 11 and 12, this AD requires an open hole high frequency eddy current (HFEC) inspection of fasteners 11 and 12 in accordance with Figures 5 and 6 (for the left wing) or Figures 18 and 19 (for the right wing), as applicable.
(5) For Model 777-300ER (Group 4) airplanes, where Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, requires a UT inspection of the upper wing skin common to fasteners 6 and 7, this AD requires this AD requires an open hole HFEC inspection of fasteners 6 and 7 in accordance with Figures 30 and 34 (for the left wing) or Figures 39 and 43 (for the right wing), as applicable.
(6) For Model 777-200LR (Group 5) airplanes, where Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, requires a UT inspection of the upper wing skin common to fasteners 6 and 7, this AD requires an open hole HFEC inspection of fasteners 6 and 7 in accordance with Figures 30 and 34 (for the left wing) or Figures 39 and 43 (for the right wing), as applicable.
(7) For Model 777F (Group 6) airplanes, where Boeing Alert Requirements Bulletin 777-57A0125 RB, dated July 25, 2023, requires a UT inspection of the upper wing skin common to fasteners 6 and 7, this AD requires an open hole HFEC inspection of fasteners 6 and 7 in accordance with Figures 30 and 34 (for the left wing) or Figures 39 and 43 (for the right wing), as applicable.
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
