Airworthiness Directive · Amendment 39-21796 · Wings
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. This AD was prompted by crack indications found in the lower aft wing skin bolt holes where the flap tracks attach to the track support fitting; this finding was on a Model 737-300 series airplane, which has a design similar to the Model 757 airplanes. This AD requires repetitive high frequency eddy current (HFEC) inspections for cracking of the lower aft wing skin aft edge at certain flap tracks, and repair if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
(1) For all airplanes except those identified in paragraph (g)(2) of this AD: Except as specified by paragraph (h) of this AD, at the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 757-57A0074 RB, dated June 11, 2020, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 757-57A0074 RB, dated June 11, 2020.
Note 1 to paragraph (g)(1): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 757-57A0074, dated June 11, 2020, which is referred to in Boeing Alert Requirements Bulletin 757-57A0074 RB, dated June 11, 2020.
(2) For airplanes on which Aviation Partners Boeing blended winglets or scimitar blended winglets are installed using supplemental type certificate (STC) ST01518SE, or on which they have been installed and subsequently removed: Except as specified by paragraph (h) of this AD, at the applicable times specified in paragraph 1.E., “Compliance” of Aviation Partners Boeing Alert Service Bulletin AP757-57-011, dated August 21, 2020, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Aviation Partners Boeing Alert Service Bulletin AP757-57-011, dated August 21, 2020.
(1) Where Boeing Alert Requirements Bulletin 757-57A0074 RB, dated June 11, 2020, uses the phrase “the original issue date of Requirements Bulletin 757-57A0074 RB,” this AD requires using “the effective date of this AD.”
(2) Where Boeing Alert Requirements Bulletin 757-57A0074 RB, dated June 11, 2020, 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 Aviation Partners Boeing Alert Service Bulletin AP757-57-011, dated August 21, 2020, uses the phrase “the original issue date of this service bulletin,” this AD requires using “the effective date of this AD.”
(4) Where Aviation Partners Boeing Alert Service Bulletin AP757-57-011, dated August 21, 2020, 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.
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
