Airworthiness Directives; The Boeing Company Airplanes
Built by the Tribune's code from the Federal Register. No AI wrote this page. Published in the Federal Register Nov. 9, 2026. Document 2026-22817. Updated Nov. 9, 2026.
- What it does
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.
The Federal Aviation Administration's summary, as published in the Federal Register.
- What changed in the regulation
1 part of Title 14 of the Code of Federal Regulations:
- Compared with
The Federal Aviation Administration has published 482 final rules in 2026 so far, compared with 518 in all of 2025.
Counted by the Tribune from Federal Register records since Jan. 1, 2025.
- Before this
1094 earlier Federal Register documents under regulation identifier 2120-AA64 since Jan. 1, 2025.
- Nov. 9, 2026 Final rule; request for comments. Airworthiness Directives; Lycoming Engines
- Nov. 9, 2026 Final rule. Airworthiness Directives; Airbus Helicopters
- Nov. 9, 2026 Final rule. Airworthiness Directives; Airbus Helicopters Deutschland GmbH (AHD) Helicopters
- Nov. 9, 2026 Final rule. Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Engines
- Nov. 6, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Airbus SAS Airplanes
- Nov. 6, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Dassault Aviation Airplanes
- Nov. 5, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Airbus SAS Airplanes
- Nov. 5, 2026 Notice of proposed rulemaking (NPRM). Airworthiness Directives; Costruzioni Aeronautiche Tecnam S.P.A. Airplanes
- What happens next and when
This AD is effective December 14, 2026.
The agency's dates, word for word.
- Check it yourself
The record as published
| Document number | 2026-22817 |
|---|---|
| Action | Final rule. |
| Agencies | Transportation Department; Federal Aviation Administration |
| Published | Nov. 9, 2026 |
| Effective date | Dec. 14, 2026 |
| Regulation identifier (RIN) | 2120-AA64 |
| Docket | FAA-2026-1335 |
Source: the Federal Register (public domain). The document in the Federal Register