Airworthiness Directive · Amendment 39-18916 · Wings
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 767-200 series airplanes, equipped with 767-400ER flaps modified as specified in supplemental type certificate (STC) ST01329WI-D.
We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 767-200 series airplanes. This AD requires repetitive inspections for damage of a certain drive arm assembly, and related investigative and corrective actions if necessary. This AD was prompted by a report indicating that during an inspection associated with a flap, the extend overtravel stops on an actuator crank arm assembly were making contact with an adjacent drive arm assembly when the flaps were retracted. We are issuing this AD to address the unsafe condition on these products.
Except as provided by paragraph (i)(1) of this AD, at the applicable time specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 767-57A0134, dated May 27, 2016: Do a general visual inspection of the 6-9 drive arm assembly on the left and right wing for any damage, and all applicable related investigative and corrective actions, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-57A0134, dated May 27, 2016, except as required by paragraph (i)(2) of this AD. Do all applicable related investigative and corrective actions before further flight. Repeat the inspection at the interval specified in paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 767-57A0134, dated May 27, 2016.
Doing the action specified in either paragraph (h)(1) or paragraph (h)(2) of this AD, in accordance with the Accomplishment Instructions of Boeing Alert Service Bulletin 767-57A0134, dated May 27, 2016, except as required by paragraph (i)(2) of this AD, terminates the repetitive inspections required by paragraph (g) of this AD for the drive arm assembly associated with the replacement or modification.
(1) A 4-5 actuator crank arm assembly replacement.
(2) A 4-5 actuator crank arm assembly modification, including all applicable related investigative and corrective actions.
(1) Where paragraph 1.E., “Compliance,” of Boeing Alert Service Bulletin 767-57A0134, dated May 27, 2016, specifies a compliance time “after the original issue date of this service bulletin,” this AD requires compliance within the specified compliance time after the effective date of this AD.
(2) Where Boeing Alert Service Bulletin 767-57A0134, dated May 27, 2016, specifies to contact Boeing for appropriate action as an “RC” (Required for Compliance) step, this AD requires repair using a method approved in accordance with the procedures specified in paragraph (j) of this AD.
