Data / Federal rules / 2026-13217
Airworthiness Directives; The Boeing Company Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on June 30, 2026. It took effect on July 1, 2026. Comments closed on June 14, 2026.
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What the agency says
The FAA is adopting a new airworthiness directive (AD) for all The Boeing Company Model 787-8, 787-9, and 787-10 airplanes. This AD was prompted by the determination that radio altimeters cannot be relied upon to perform their intended function if they experience interference from wireless broadband operations in the 3.7-3.98 GHz frequency band (5G Lower C-Band) while operating in Canadian airspace, and the determination that as a result of this interference, certain airplane systems may not properly transition from AIR to GROUND mode when landing on certain runways, resulting in a longer landing distance than normal due to the effect on thrust reverser deployment, speedbrake deployment, and increased idle thrust. This AD requires revising the existing airplane flight manual (AFM) to incorporate limitations prohibiting certain operations requiring radio altimeter data when operating in Canadian airspace. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-13217
- Type
- Final rule
- Action
- Final rule; request for comments
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- June 30, 2026
- Takes effect
- July 1, 2026
- Comments due
- June 14, 2026
- Dates
- This AD is effective July 1, 2026.
- Docket
- Docket No. FAA-2026-7203; Project Identifier AD-2026-00547-T; Amendment 39-23394; AD 2026-13-11
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 11
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in June 2026
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.