AD 2019-17-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet | Various | Airworthiness Directives; Learjet, Inc. Airplanes |
Unsafe Condition
The upper fuselage skin under the aft oxygen line fairing is subject to multi-site damage, which could result in reduced structural integrity of the airplane.
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Required Actions
A one-time fluorescent dye penetrant inspection of the fuselage skin for corrosion, additional related inspections and corrective actions as necessary, and reporting the inspection results to the FAA.
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Compliance Time
Before further flight
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Affected Aircraft
Certain Learjet, Inc. Model 60 airplanes with either a dorsal-mounted oxygen bottle or with a retained oxygen line fairing installed on top of the fuselage after removing the dorsal-mounted oxygen bottle.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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