AD 86-15-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-80A | GENERAL ELECTRIC COMPANY Models CF6-80A/A1/A2/A3 Engines |
| engine | General Electric Company | CF6-80A1 | GENERAL ELECTRIC COMPANY Models CF6-80A/A1/A2/A3 Engines |
| engine | General Electric Company | CF6-80A2 | GENERAL ELECTRIC COMPANY Models CF6-80A/A1/A2/A3 Engines |
| engine | General Electric Company | CF6-80A3 | GENERAL ELECTRIC COMPANY Models CF6-80A/A1/A2/A3 Engines |
Unsafe Condition
Cracking or uncontained failure of stage 1 high pressure turbine (HPT) disks, Part Numbers 9234M67 and 9367M45.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect stage 1 HPT disks at specified embossments per GE ASB 72-446. Remove disks with tool marks or cracks prior to further flight. Ferrying allowed under FAR 21.197/199.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
As indicated in the AD, with specific schedules based on prior inspections: (a) next HPT exposure or before 5,300 service cycles since new; (b) next HPT exposure or before 5,000 service cycles since new; (c) prior to further flight for cracked disks.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Electric CF6-80A/A1/A2/A3 engines with stage 1 HPT disks Part Numbers 9234M67 and 9367M45.
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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