Airworthiness Directive · Amendment 39-19611 · Flight controls
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 787 series airplanes, certificated in any category.
We are adopting a new airworthiness directive (AD) for all The Boeing Company Model 787 series airplanes. This AD was prompted by reports of hydraulic leakage caused by damage to aileron and elevator actuators from lightning strikes. This AD requires an inspection or records check to inspect for certain parts, detailed inspections of aileron and elevator power control units (PCUs), and applicable on- condition actions. We are issuing this AD to address the unsafe condition on these products.
Except as required by paragraphs (i) and (k) of this AD: For airplanes with an original certificate of airworthiness or original export certificate of airworthiness issued on or before the effective date of this AD, at the applicable times specified in paragraph 5, “Compliance,” of Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018, do all applicable actions identified as “RC” (required for compliance) in, and in accordance with, the Accomplishment Instructions of Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018.
Removal of all affected PCUs, as identified in Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018, terminates the requirements of paragraph (g) of this AD until an affected PCU is installed. Once an affected PCU is installed on an airplane, the actions specified in paragraph (j) of this AD must be done on that airplane.
Where Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018, specifies to submit a report of discrepant findings, this AD requires submitting reports at the applicable times specified in paragraphs (i)(1) and (i)(2) of this AD.
(1) If the inspection was done on or after the effective date of this AD: Submit the report within 60 days after the inspection.
(2) If the inspection was done before the effective date of this AD: Submit the report within 60 days after the effective date of this AD.
For all Model 787 series airplanes: As of the effective date of this AD, an affected PCU, as identified in Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018, may be installed provided the conditions specified in paragraphs (j)(1), (j)(2), and, as applicable, (j)(3) of this AD are met. Thereafter, comply with the actions required by paragraph (g) of this AD.
(1) The PCU is inspected as specified in paragraph (g) of this AD after installation and before further flight.
(2) All applicable on-condition actions are done before further flight.
(3) A report is submitted as required by paragraph (g) of this AD at the applicable time specified in paragraph (i) of this AD.
(1) For purposes of determining compliance with the requirements of this AD, Where Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018, uses “the Issue 002 date of this service bulletin,” this AD requires using “the effective date of this AD.”
(2) Where Boeing Alert Service Bulletin B787-81205-SB270037-00, Issue 003, dated December 3, 2018, refers to an inspection or records check to determine the PCU part number and refers to an Appendix for affected PCU part numbers, this AD also allows using the PCU assembly part number identified in the applicable Appendix to determine if the PCU is an affected part.
