Airworthiness Directives; The Boeing Company Airplanes

2026-21862] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2026-2725; Project Identifier AD-2025-00999-T; Amendment 39-23497; AD 2026-21-08] RIN 2120-AA64 Airworthiness Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. ----------------------------------------------------------------------- SUMMARY: The FAA is adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-700, -700C, -800, and -900ER series airplanes. This AD was prompted by a leak through the form-in- place (FiP) gasket at the engine fuel shutoff valve access panel found during a leak check. This AD requires a detailed inspection of the left- and right-side FiP gasket at the engine fuel shutoff valve access panel for correct sealant installation, a fluid leak test of the engine fuel shutoff valve access panels for any leak, and applicable on- condition actions. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective December 1, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 1, 2026. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FA