Data / Federal rules / 2026-14238
Airworthiness Directives; Bell Textron Canada Limited Helicopters
The Federal Aviation Administration published this proposed rule in the Federal Register on July 15, 2026. Comments closed on August 31, 2026.
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What the agency says
The FAA proposes to supersede Airworthiness Directive (AD) 2022-27-08, which applies to certain Bell Textron Canada Limited (Bell) Model 407 helicopters. AD 2022-27-08 requires inspecting the tailboom attachment structure and reporting the inspection results. Since the FAA issued AD 2022-27-08, two additional broken upper-left tailboom attachment bolts have been reported. This proposed AD would require repetitively inspecting the tail boom attachment structure, performing a torque inspection, and replacing attachment hardware. This proposed AD would also include performing a detailed inspection of the tail boom assembly and associated aft fuselage structure, which would be a terminating action to the repetitive inspection requirements. This proposed AD would also prohibit installing certain longeron assemblies. This proposed AD would also require revising the existing airworthiness limitations section (ALS) of the helicopter maintenance manual to include a new life limit for the tail boom attachment bolts. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-14238
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- July 15, 2026
- Comments due
- August 31, 2026
- Dates
- The FAA must receive comments on this NPRM by August 31, 2026.
- Docket
- Docket No. FAA-2026-7220; Project Identifier MCAI-2025-01738-R
- 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 July 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.