AD 80-03-06
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
Stage 2 HPT disks may fail due to fatigue.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove Stage 2 HPT disks from service based on their cycle counts. Disks with over 8400 cycles at AD effective date must be removed within 100 cycles. Disks with under 8400 cycles must be removed before reaching 8500 cycles. Specific disks (P/N 9137M15P02, serial numbers MP036073, MP030786, MP030797, MP035005, RPO24722) must be removed before 8800 cycles. Additional cycles may be approved individually by FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Effective February 8, 1980
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Electric CF6-6 series engines with Stage 2 HPT disks, Part Numbers 9083M48P01, 9084M52P02, 9084M52P05, 9137M15P01, and 9137M15P02
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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