Airworthiness Directive · Amendment 39-22655 · Turbine/turboprop engine
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 787-8, 787-9, and 787-10 airplanes, certificated in any category, with Rolls-Royce Trent 1000 engines installed.
The FAA is superseding Airworthiness Directive (AD) 2020-26- 08, which applied to The Boeing Company Model 787-8, 787-9, and 787-10 airplanes powered by Rolls-Royce Trent 1000 engines. AD 2020-26-08 required repetitive inspections of the inner fixed structure (IFS) forward upper fire seal and thermal insulation blankets in the forward upper area of the thrust reverser (TR) for damage and applicable on- condition actions. Since the FAA issued AD 2020-26-08, the FAA determined that a new upper splitter fairing assembly is needed to prevent damage to the fire seal and thermal insulation blanket. This AD continues to require the actions specified in AD 2020-26-08 and requires determining if an affected part number of the upper splitter fairing assembly is installed on the engine, replacing an affected upper splitter fairing assembly part number with a new upper splitter fairing assembly part number, inspecting the IFS forward upper fire seal and thermal insulation blanket for any damage, and applicable on- condition actions. This AD also prohibits the installation of affected parts. The FAA is issuing this AD to address the unsafe condition on these products.
This paragraph restates the requirements of paragraph (g) of AD 2020-26-08, with additional service information, revised affected airplanes, and new terminating action. For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before the effective date of this AD and for airplanes listed in the “Effectivity” section of Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022: 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-SB780041-00 RB, Issue 001, dated March 31, 2020, or Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 002, dated December 21, 2021, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 001, dated March 31, 2020, or Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 002, dated December 21, 2021. Accomplishing the actions required by paragraph (i)(2) of this AD terminates the actions required by this paragraph.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by paragraph (g) of this AD can be found in Boeing Alert Service Bulletin B787-81205-SB780041-00, Issue 001, dated March 31, 2020, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 001, dated March 31, 2020; or in Boeing Alert Service Bulletin B787-81205-SB780041-00, Issue 002, dated December 21, 2021, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 002, dated December 21, 2021.
This paragraph restates the exceptions specified in paragraph (h) of AD 2020-26-08, with additional service information. Where Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 001, dated March 31, 2020, or Boeing Alert Requirements Bulletin B787-81205-SB780041-00 RB, Issue 002, dated December 21, 2021, uses the phrase “the Issue 001 date of Requirements Bulletin B787-81205-SB780041-00 RB,” this AD requires using January 27, 2021, (the effective date of AD 2020-26-08).
(1) For airplanes with original airworthiness certificate or original export certificate of airworthiness issued on or before the effective date of this AD and for airplanes listed in the “Effectivity” section of Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022: Within 7 years after the effective date of this AD, or within 7 years after the date of issuance of the original airworthiness certificate or original export certificate of airworthiness, whichever occurs later, inspect the airplane to determine the part number of the upper splitter fairing assembly installed on each engine. A review of airplane maintenance records is acceptable in lieu of this inspection if the part number of the upper splitter fairing assembly can be conclusively determined from that review. For engines on which no upper splitter fairing assembly part number (P/N) KH60375 or P/N KH11560 is installed, the actions required by paragraph (g) of this AD are no longer required for that engine.
(2) If, during any inspection or records review required by paragraph (i)(1) of this AD, an upper splitter fairing assembly P/N KH60375 or P/N KH11560 is found on any engine of an airplane: Except as specified by paragraph (j) of this AD, at the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022, for each affected engine. Accomplishing the actions required by this paragraph on all affected engines of an airplane terminates the actions required by paragraph (g) of this AD for that airplane.
Note 2 to paragraph (i)(2): Guidance for accomplishing the actions required by paragraph (i)(2) of this AD can be found in Boeing Alert Service Bulletin B787-81205-SB720007-00, Issue 001, dated December 12, 2022, which is referred to in Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022.
(1) Where the Compliance Time column of table 5 in the “Compliance” paragraph of Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022, uses the phrase “the Issue 001 date of Requirements Bulletin B787-81205-SB720007-00 RB,” this AD requires using “the effective date of this AD.”
(2) Where the service information referenced in Boeing Alert Requirements Bulletin B787-81205-SB720007-00 RB, Issue 001, dated December 12, 2022, specifies to remove the existing upper splitter fairing assembly P/N KH60375, this AD requires removing the existing upper splitter fairing assembly P/N KH60375 or P/N KH11560.
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.
