Airworthiness Directive · Amendment 39-23483 · Flight controls
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 787-8, 787-9, and 787-10 airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 002, dated November 25, 2024.
The FAA is superseding Airworthiness Directive (AD) 2019-20- 07, which applied to The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. AD 2019-20-07 required repetitive operational checks of the leading edge (LE) outboard (OB) slats and applicable on-condition actions. AD 2019-20-07 also required revising the airplane flight manual (AFM) to prohibit flap retraction under icing conditions after landing and revising the existing maintenance or inspection program, as applicable, to incorporate a new operation check. This AD was prompted by the manufacturer developing further actions to address the unsafe condition. This AD continues to require all requirements of AD 2019-20- 07. This AD would also require replacing the LE outboard geared rotary actuator (GRA) with a LE outboard lockout actuator (LEOLA) at leading edge OB slat locations and revising the existing maintenance or inspection program, as applicable, to incorporate a new certification maintenance requirement (CMR), which terminates the retained requirements of AD 2019-20-07. This AD also removes airplanes from the applicability. The FAA is issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (g) of AD 2019-20-07, with no changes. Except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin B787-81205-SB270051-00 RB, Issue 001, dated July 5, 2019, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB270051-00 RB, Issue 001, dated July 5, 2019.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin B787-81205-SB270051-00, Issue 001, dated July 5, 2019, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB270051-00 RB, Issue 001, dated July 5, 2019.
This paragraph restates the requirements of paragraph (h) of AD 2019-20-07, with no changes. For purposes of determining compliance with the requirements of this AD: Where Boeing Alert Requirements Bulletin B787-81205-SB270051-00 RB, Issue 001, dated July 5, 2019, uses the phrase “the Issue 001 date of Requirements Bulletin B787-81205-SB270051-00 RB,” this AD requires using “October 11, 2019” (the effective date of AD 2019-20-07).
This paragraph restates the requirements of paragraph (i) of AD 2019-20-07, with no changes. Within 60 days after October 11, 2019 (the effective date of AD 2019-20-07), revise the Limitations Section of the existing AFM to include the information in figure 1 to paragraph (i) of this AD. This may be done by inserting a copy of figure 1 to paragraph (i) of this AD into the Limitations Section of the existing AFM.
This paragraph restates the requirements of paragraph (j) of AD 2019-20-07, with no changes. Within 60 days after October 11, 2019 (the effective date of AD 2019-20-07), revise the existing maintenance or inspection program, as applicable, to incorporate the information specified in figure 2 to paragraph (j) of this AD. This may be done by inserting a copy of figure 2 to paragraph (j) of this AD into the existing maintenance or inspection program.
This paragraph restates the requirements of paragraph (k) of AD 2019-20-07, with no changes. After the existing maintenance or inspection program has been revised as required by paragraph (j) of this AD, no alternative actions (e.g., inspections) or intervals may be used unless the actions or intervals are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (p) of this AD.
Except as specified by paragraph (i) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 002, dated November 25, 2024, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 002, dated November 25, 2024.
Note 2 to paragraph (l): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin B787-81205-SB270055-00, Issue 002, dated November 25, 2024, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 002, dated November 25, 2024.
Accomplishing the actions required by paragraph (l) of this AD terminates the requirements of paragraphs (g), (i), and (j) of this AD for that airplane. After all affected airplanes in an operator's fleet have complied with paragraph (l) of this AD, the AFM revision required by paragraph (i) of this AD may be removed and the maintenance or inspection program revision required by paragraph (j) of this AD may be removed.
Where the Compliance Time column of the tables in the “Compliance” paragraph of Boeing Alert Requirements Bulletin B787-81205-SB270055-00 RB, Issue 002, dated November 25, 2024, refers to the Issue 001 date of Requirements Bulletin B787-81205-SB270055-00 RB, this AD requires using the effective date 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.
