Airworthiness Directive · Amendment 39-23487 · Stabilizers
The Boeing Company Airplanes
The FAA has filed this AD for publication in the Federal Register on October 19, 2026. This page shows the public-inspection copy and is replaced by the published text when it appears. Its effective date is set at publication.
This AD applies to The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes, certificated in any category, as identified in Boeing Alert Requirements Bulletin 737-55A1104 RB, dated June 12, 2025.
The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER series airplanes. This AD was prompted by reports from multiple operators of pitch oscillation events due to excessive horizontal stabilizer freeplay. This AD requires measuring the freeplay of the horizontal stabilizer pivot hinges and the jackscrew and applicable on-condition actions. 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 737-55A1104 RB, dated June 12, 2025, do all applicable actions identified in, and in accordance with, the Accomplishment Instructions of Boeing Alert Requirements Bulletin 737-55A1104 RB, dated June 12, 2025.
Note 1 to paragraph (g): Guidance for accomplishing the actions required by this AD can be found in Boeing Alert Service Bulletin 737-55A1104, dated June 12, 2025, which is referred to in Boeing Alert Requirements Bulletin 737-55A1104 RB, dated June 12,2025.
Where the “Effectivity” paragraph and the Boeing Recommended Compliance Time columns of the tables in the “Compliance” paragraph of Boeing Alert Requirements Bulletin 737-55A1104 RB, dated June 12, 2025, refer to the original issue date of the Requirements Bulletin 737-55A1104 RB, this AD requires using the effective date of this AD.
