Airworthiness Directive · Amendment 39-22204 · Auto flight
The Boeing Company Airplanes
This AD applies to The Boeing Company Model 737-300, -400, and -500 series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 737-22A1411 RB, dated August 22, 2022.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by a report that a spoiler sensor failure may go undetected by the autothrottle (A/T) computer. This AD requires repetitive built-in test equipment (BITE) tests of the A/T computer to detect a spoiler sensor failure, and corrective action if necessary. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified by paragraph (h) of this AD: At the applicable times specified in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 737-22A1411 RB, dated August 22, 2022, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 737-22A1411 RB, dated August 22, 2022.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 737-22A1411 RB, dated August 22, 2022, which is referred to in Boeing Alert Requirements Bulletin 737-22A1411 RB, dated August 22, 2022.
Where Boeing Alert Requirements Bulletin 737-22A1411 RB, dated August 22, 2022, specifies the compliance time for the initial autopilot aileron actuator test as “Within 250 flight hours after the Original Issue date of Requirements Bulletin 737-22A1411 RB,” for this AD the initial compliance time is within 250 flight hours or 2 months after the effective date of this AD, whichever occurs first.
