AD 2020-22-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric | Company | Airworthiness Directives; General Electric Company Turbofan Engines |
Unsafe Condition
fuel coking of the HMU fuel metering valve (FMV) electro-hydraulic servo valves (EHSV) resulting in tailpipe fire
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
remove the HMU and its replacement with a part eligible for installation, overhaul of the HMU (complete) or overhaul of the HMU FMV EHSV
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 40,000 flight hours since new or since last overhaul
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
General Electric Company (GE) CF6-80C2A5F, -80C2B1F, -80C2B2F, -80C2B4F, -80C2B5F, -80C2B6F, -80C2B6FA, -80C2B7F, -80C2B8F, -80C2D1F, -80C2K1F, -80C2L1F, -80E1A2, -80E1A3, -80E1A4, and -80E1A4/B model turbofan engines with a certain hydromechanical unit (HMU) installed
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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