Data / Federal rules / 2026-08549
Airworthiness Directives; General Electric Company Engines
The Federal Aviation Administration published this proposed rule in the Federal Register on May 1, 2026. Comments closed on June 15, 2026.
SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.
What the agency says
The FAA proposes to adopt a new airworthiness directive (AD) for certain General Electric Company (GE) Model CF34-1A, CF34-3A, CF34- 3A1, CF34-3A2, and CF34-3B engines. This proposed AD was prompted by a dual engine power loss event and consequent manufacturer investigation, which revealed corrosion in the high-pressure compressor (HPC) case affecting the variable geometry (VG) system. This proposed AD would require performing certain restart tests and, depending on the results of the tests, additional actions. This proposed AD would also require performing a borescope inspection (BSI) of the HPC case for corrosion and, depending on the results, a VG system functional check for pressure evaluation. This proposed AD would also require, depending on inspection results, performing a force gage test on the feedback cable for tightness and a visual inspection of the VG system for obstruction and, if necessary, removal of the engine from service. This proposed AD would also require revising the airworthiness limitations section (ALS) of the existing engine maintenance manual to incorporate the VG system functional check. The FAA is proposing this AD to address the unsafe condition on these products.
Key facts
- Document number
- 2026-08549
- Type
- Proposed rule
- Action
- Notice of proposed rulemaking (NPRM)
- Agency
- Transportation Department; Federal Aviation Administration
- Published
- May 1, 2026
- Comments due
- June 15, 2026
- Dates
- The FAA must receive comments on this proposed AD by June 15, 2026.
- Docket
- Docket No. FAA-2026-3875; Project Identifier AD-2025-01365-E
- Regulation ID (RIN)
- 2120-AA64
- Code of Federal Regulations
- 14 CFR 39
- Topics
- Air transportation; Aircraft; Aviation safety; Incorporation by reference; Safety
- Pages
- 4
Other documents from the Federal Aviation Administration
| Document | Type | Published |
|---|---|---|
| Airworthiness Directives; The Boeing Company Airplanes; Correction 2026-21686 | Final rule | Oct 23 |
| Airworthiness Directives; MD Helicopters, LLC Helicopters 2026-21664 | Final rule | Oct 23 |
| Airworthiness Directives; General Electric Company Engines 2026-21590 | Final rule | Oct 22 |
| Establishment of Class E Airspace; Havana, IL 2026-21565 | Final rule | Oct 22 |
| Revocation of Class E Airspace; Santa Elena, TX 2026-21564 | Final rule | Oct 22 |
| Establishment of Class E Airspace; DeKalb, IL 2026-21563 | Final rule | Oct 22 |
| Airspace Designations; Incorporation by Reference Amendment of FAA Order JO 7400.11M 2026-21422 | Final rule | Oct 20 |
| Airworthiness Directives; Airbus Helicopters 2026-21387 | Proposed rule | Oct 19 |
Everything from the Federal Aviation Administration · Rules on air transportation · Rules on aircraft · Rules on aviation safety · Published in May 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.