AD 76-21-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-6D | GENERAL ELECTRIC Models CF6-6D and CF6-6D1 Engines |
| engine | General Electric Company | CF6-6D1 | GENERAL ELECTRIC Models CF6-6D and CF6-6D1 Engines |
Unsafe Condition
Excessive overpressure in the high pressure compressor
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove the abradable material from the inside diameter of the Fan Stator Shroud Mid Ring (Booster Stage) in accordance with General Electric Service Bulletin (CF6-6) 72-647 or subsequent FAA Approved Revision thereto.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required by June 30, 1978, unless previously accomplished.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Electric Models CF6-6D and CF6-6D1 Turbofan Engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.