AD 2009-11-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet | 45 | Airworthiness Directives; Learjet Model 45 Airplanes |
Unsafe Condition
Chafing found on hydraulic tubing in the left-hand engine, specifically on the case drain tube from the hydraulic pump case, hydraulic pressure tube, and hydraulic supply tube on the oil reservoir, could lead to hydraulic tube failure and uncontrolled loss of flammable fluid within the engine cowling, resulting in a fire in the engine nacelle and loss of control of the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Repetitive inspections for chafing and other damage of the case drain tube from the hydraulic pump case installed on the left-hand engine, with corrective action if necessary. Repetitive inspections for discrepancies of the left engine's nacelle tubing and evidence of fluid leakage within the left engine accessory compartment, with corrective actions if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 50 flight hours after the effective date of the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Learjet Model 45 airplanes, as specified in the AD, with certain serial numbers and configurations.
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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