AD 92-19-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet Inc. | 23 | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24 | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24A | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24B | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24B-A | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24C | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24D | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24D-A | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24E | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
| aircraft | Learjet Inc. | 24F | Airworthiness Directives; Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 Series Airplanes |
Unsafe Condition
Electrical arcing and an in-flight fire due to inadequate separation between crew oxygen plumbing and map light wires.
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Required Actions
Modify the crew oxygen plumbing and map light wires in accordance with Learjet Airplane Modification Kit AMK No. 90-5, dated October 11, 1991. Submit requests for alternative methods of compliance or adjustments to the Manager, Wichita Aircraft Certification Office through an appropriate FAA Principal Maintenance Inspector.
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Compliance Time
Within 30 days after the effective date of this AD
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Affected Aircraft
Learjet (formerly Gates Learjet) Model 23, 24, 25, 28, 29, 31, 35, and 36 series airplanes as listed in Learjet Airplane Modification Kit No. AMK 90-5, dated October 11, 1991.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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