AD 99-01-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | General Electric Company | CF6-80C2A1 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2A2 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2A3 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2A5 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2A5F | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2A8 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2B1 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2B1F | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2B1F1 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
| engine | General Electric Company | CF6-80C2B1F2 | Airworthiness Directives; General Electric Company CF6-80C2 Series Turbofan Engines |
Unsafe Condition
Failure of a fuel tube flange connection due to improper Accessory Gearbox (AGB) idler adapter inserts, resulting in a high pressure fuel leak and engine fire.
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Required Actions
Conduct a one-time visual inspection to ensure correct AGB idler adapter threaded inserts are installed. Remove AGB idler adapters with improper inserts if necessary. Actions must be accomplished in accordance with GE CF6-80C2 Alert Service Bulletins (ASB) 73-A283, Revision 2, dated November 18, 1998, or earlier revisions.
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Compliance Time
Required as indicated, unless accomplished previously.
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Affected Aircraft
General Electric Company CF6-80C2 series turbofan engines with AGB idler adapters, P/N 9395M78G08 reworked from P/N 9395M78G06 using SB 72-743 dated August 25, 1994, excluding those repaired by GE Repair Document 032-273-S1 dated April 8, 1998.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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