AD 78-07-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-6D | GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines |
| engine | General Electric Company | CF6-6D1 | GENERAL ELECTRIC Model CF6-6D and CF6-6D1Engines |
Unsafe Condition
Failure of the 11-13 Stage Compressor Spool, P/N 9021M66 (all assembly part numbers).
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Required Actions
Modify the 11-13 spool in accordance with General Electric Service Bulletin 72-682. Inspect the specified serial numbers within the next 500 cycles and thereafter at intervals of 700 or 1800 cycles depending on prior inspection.
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Compliance Time
Not later than December 31, 1979.
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Affected Aircraft
General Electric Model CF6-6D and CF6-6D1 engines with specified serial numbers listed in the AD.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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