Airworthiness Directives; The Boeing Company Airplanes

2026-22817] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2026-1335; Project Identifier AD-2025-00825-T; Amendment 39-23511; AD 2026-22-09] 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 787-8, 787-9, and 787-10 airplanes. This AD was prompted by reports that the low range radio altimeter (LRRA) system has an increased rate of non-computed data (NCD) outputs at low altitudes during approach and landing, which could cause unreliable altimeter function. This AD requires replacing the left and right LRRA transmit and receive coaxial cables with larger gauge coaxial cables. The FAA is issuing this AD to address the unsafe condition on these products. DATES: This AD is effective December 14, 2026. The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of December 14, 2026. ADDRESSES: AD Docket: You may examine the AD docket at regulations.gov under Docket No. FAA-2026-1335; or in person at Docket Operations between 9 a.m. and 5 p.m., Mond