AD 99-06-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airbus | A300 B4-601 | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A300 B4-603 | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A300 B4-605R | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A300 B4-620 | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A300 B4-622R | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A300 F4-605R | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A300 F4-622R | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A310-203 | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A310-221 | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
| aircraft | Airbus | A310-222 | Airworthiness Directives; Airbus Model A310 and A300-600 Series Airplanes Equipped with General Electric CF6-80C2 Engines |
Unsafe Condition
Contamination of the engine accessory gearbox oil with hydraulic fluid, which could result in an in-flight engine shutdown.
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Required Actions
Perform flow checks of the hydraulic pump drain system to ensure it is not clogged and correct any discrepancies. Replace existing magnetic seals of the accessory gearbox assembly with improved spring-loaded seal and ring assemblies. Replace engine drain modules with drain manifolds.
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Compliance Time
Within 30 days after the effective date of this AD for flow checks, repeated at intervals not to exceed 500 flight hours until modification in paragraph (b) is accomplished. Magnetic seal replacement required within 3 months after the effective date.
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Affected Aircraft
Airbus Model A310 and A300-600 series airplanes equipped with General Electric CF6-80C2 engines, except those with Modifications 8952, 10401, or 10656 installed.
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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