AD 97-22-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-50A | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50C | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50C1 | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50C2 | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50C2B | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50C2D | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50CA | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50E | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50E1 | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-50E2 | Airworthiness Directives; General Electric Company CF6-50 and -80C2 Series Turbofan Engines |
Unsafe Condition
Failure of the high pressure compressor rotor (HPCR) stage 3-9 spool due to crack initiation in the area of the stage 3 dovetail blade slot and propagation in low cycle fatigue leading to disk rupture.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service defective HPCR 3-9 spools identified by serial number in applicable service bulletins and replace with serviceable parts within 30 days after the effective date of this AD. Compliance must follow GE CF6-50 SB 72-A1139 or CF6-80C2 SB 72-A906, depending on engine series.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
General Electric Company CF6-50 and -80C2 series turbofan engines installed on Boeing 767 and 747 series, McDonnell Douglas DC-10 and MD-11, and Airbus Industries A300 and A310 series aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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