AD 81-19-08
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-6D | GENERAL ELECTRIC Model CF6-6 Series Engines |
| engine | General Electric Company | CF6-6D1 | GENERAL ELECTRIC Model CF6-6 Series Engines |
| engine | General Electric Company | CF6-6D1A | GENERAL ELECTRIC Model CF6-6 Series Engines |
| engine | General Electric Company | CF6-6K | GENERAL ELECTRIC Model CF6-6 Series Engines |
| engine | General Electric Company | CF6-6K2 | GENERAL ELECTRIC Model CF6-6 Series Engines |
Unsafe Condition
Low cycle fatigue failure of low pressure turbine rotor stage 2 disks with part numbers 9690M77P03, 9690M77P04, 9690M77P09, 9690M77P11, and 9690M77P13.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Reduce life limits below approved figures. Remove from service low pressure turbine rotor stage 2 disks prior to reaching revised life limits or within 25 cycles after AD effective date, whichever is later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 25 cycles in service after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Electric Model CF6-6 series engines installed in McDonnell Douglas DC10-10 aircraft with low pressure turbine rotor stage 2 disks part numbers 9690M77P03, 9690M77P04, 9690M77P09, 9690M77P11, and 9690M77P13.
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
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