Airworthiness Directive · Amendment 39-22494 · Flight controls
The Boeing Company Airplanes
This AD applies to all The Boeing Company Model 767-200, -300, -300F, -400ER, and -2C series airplanes, certificated in any category.
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 767 airplanes. This AD was prompted by reports of inoperative manual and alternate horizontal stabilizer trim switches. This AD requires repetitive inspections for immersion of each limit switch and position transmitter module (LSPTM) and of the LSPTM electrical wiring, repetitive inspections for blockage of the drain holes and cleaning of each drain hole, repetitive inspections for loose or cracked leveling compound, and applicable on-condition actions. For certain airplanes, this AD also requires installing two new drain holes, performing repetitive inspections for blockage of the drain holes and cleaning each drain hole, and applicable on-condition actions. The FAA is issuing this AD to address the unsafe condition on these products.
(1) For all Model 767-200, -300, -300F, and -400ER airplanes: Except as specified by paragraph (h) of this AD, at the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021.
Note 1 to paragraph (g)(1): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 767-27A0240, dated January 19, 2021, which is referred to in Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021.
(2) For Model 767-200, -300, -300F, and -400ER airplanes, as identified in Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021: Except as specified by paragraph (h) of this AD, at the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021. Accomplishing the installation of two new drain holes required by this paragraph terminates the repetitive inspections of the drain holes required by paragraph (g)(1) of this AD.
Note 2 to paragraph (g)(2): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 767-27A0243, dated May 28, 2021, which is referred to in Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021.
(3) For Model 767-2C airplanes: Within 90 days after the effective date of this AD, inspect the LSPTMs, LSPTM electrical wiring, drain holes, and leveling compound; install two new drain holes as applicable; and do applicable on-condition actions in accordance with a method approved by the Manager, AIR-520 Continued Operational Safety Branch, FAA.
(1) Where Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021, uses the phrase “the original issue date of the Requirements Bulletin 767-27A0243 RB,” this AD requires using “the effective date of this AD.”
(2) Where Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, uses the phrase “the original issue date of the Requirements Bulletin 767-27A0240 RB,” this AD requires using “the effective date of this AD.”
(3) Where Boeing Alert Requirements Bulletin 767-27A0243 RB, dated May 28, 2021, specifies a compliance time for Action 1 (accomplishment of Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021), for this AD the compliance times for accomplishing the actions in Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, are as specified in paragraph (g)(1) of this AD.
(4) Where the “Repeat Interval (Not to Exceed)” column of the Compliance tables in Boeing Alert Requirements Bulletin 767-27A0240 RB, dated January 19, 2021, specifies “90 days,” this AD requires using “150 days.”
