Airworthiness Directive · Amendment 39-23174 · Flight controls
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 superseding Airworthiness Directive (AD) 2022-15- 06, which applied to all The Boeing Company Model 777-200, -200LR, - 300, -300ER, and 777F series airplanes. AD 2022-15-06 required disconnecting certain connectors and capping and stowing the wires that had been attached to the affected transorb modules. Since the FAA issued AD 2022-15-06, the agency has determined additional connectors are affected. Also, a replacement has been developed to address the unsafe condition, which would terminate the existing actions. This AD continues to require the actions specified in AD 2022-15-06 and requires those actions for additional connectors. This AD also requires determining if affected transorb modules are installed, replacing or testing affected transorb modules, 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.
For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before the effective date of this AD: This paragraph restates the requirements of paragraph (g) of AD 2022-15-06, with revised affected airplanes. At the later of the times specified in paragraphs (g)(1) and (2) of this AD: Disconnect the connectors and cap and stow the wires to bundles/connectors W7314/D02006P and W7579/D02005P from the transorb module part numbers CLPT-12SP-06, CLPT-12SP-07, and CLPT-12SP-67.
Note 1 to the introductory text of paragraph (g): Guidance on locating wire bundles/connectors W7314/D02006P and W7579/D02005P can be found in Section 05-55-43 of the Boeing 777 aircraft maintenance manual.
Note 2 to the introductory text of paragraph (g): Guidance on capping and stowing the wires once they are disconnected can be found in Section 20-10-11 of the Boeing Standard Wiring Practices Manual.
(1) Before the accumulation of 75,000 total flight hours or 23,000 total flight cycles, whichever occurs first.
(2) Within 3 months after August 18, 2022 (the effective date of AD 2022-15-06).
For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before the effective date of this AD: At the later of the times specified in paragraphs (h)(1) and (2) of this AD: Disconnect the connectors and cap and stow the wires to bundles/connectors W6313/D02098P or W7314/D02099P from the transorb module part numbers CLPT-12SP-06, CLPT-12SP-07, and CLPT-12SP-67.
Note 3 to the introductory text of paragraph (h): Guidance on locating wire bundles/connectors W6313/D02098P and W7314/D02099P can be found in Section 05-55-43 of the Boeing 777 aircraft maintenance manual.
Note 4 to the introductory text of paragraph (h): Guidance on capping and stowing the wires once they are disconnected can be found in Section 20-10-11 of the Boeing Standard Wiring Practices Manual.
(1) Before the accumulation of 75,000 total flight hours or 23,000 total flight cycles, whichever occurs first.
(2) Within 3 months after the effective date of this AD.
(1) For airplanes with an original airworthiness certificate or original export certificate of airworthiness issued on or before the effective date of this AD: At the later of the times specified in paragraph (i)(1)(i) or (ii) of this AD, do an inspection to determine if any airplane has a transorb module with part number CLPT-12SP-06, CLPT-12SP-07, or CLPT-12SP-67 installed. A review of airplane maintenance records is acceptable in lieu of the inspection if the part numbers can be conclusively determined from that review.
(i) Within 24 months after the effective date of this AD.
(ii) Within 24 months after the date of issuance of the original standard airworthiness certificate or the original export certificate of airworthiness.
(2) If, during any inspection or records review required by paragraph (i)(1) of this AD, any transorb module with part number CLPT-12SP-06, CLPT-12SP-07, or CLPT-12SP-67 is found: Except as specified by paragraph (j) of this AD, at the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 777-27A0125 RB, dated February 3, 2023, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 777-27A0125 RB, dated February 3, 2023. Doing the replacement required by this paragraph terminates the requirements of paragraphs (g) and (h) of this AD.
Note 5 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 777-27A0125, dated February 3, 2023, which is referred to in Boeing Alert Requirements Bulletin 777-27A0125 RB, dated February 3, 2023.
Where the Compliance Time column of the table in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 777-27A0125 RB, dated February 3, 2023, refers to the original issue date of Requirements Bulletin 777-27A0125 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.
Aircraft
