Airworthiness Directives; General Electric Company Engines
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-pressur
| Agency | Transportation Department, Federal Aviation Administration |
|---|---|
| Document type | Proposed Rule |
| Published | 2026-05-01 |
| Summary | 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 eval |
| Document number | 2026-08549 |
| Official record | https://www.federalregister.gov/documents/2026/05/01/2026-08549/airworthiness-directives-general-electric-company-engines |