Data / Federal rules / 2026-04832
Airworthiness Directives; The Boeing Company Airplanes
The Federal Aviation Administration published this final rule in the Federal Register on March 12, 2026. It took effect on April 16, 2026.
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What the agency says
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 a report of multiple instances of loss of transponder for airplanes entering airspace in the presence of continuous wave (CW) interference where the transponder did not meet the minimum operational performance standards (MOPS) requirement for transponder response. This AD requires replacing the left and right integrated surveillance system processor unit (ISSPU) hardware. The FAA is issuing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-04832
- Type
- Final rule
- Action
- Final rule
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- March 12, 2026
- Takes effect
- April 16, 2026
- Dates
- This AD is effective April 16, 2026.
- Docket
- Docket No. FAA-2025-0924; Project Identifier AD-2025-00294-T; Amendment 39-23274; AD 2026-05-01
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
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Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in March 2026
Read from the Federal Register API, last updated 2026-10-24. 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.