AD 95-19-04 R1 RES
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet Inc. | 35 | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
| aircraft | Learjet Inc. | 35A (C-21A) | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
| aircraft | Learjet Inc. | 36 | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
| aircraft | Learjet Inc. | 36A | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
| aircraft | Learjet Inc. | 55 | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
| aircraft | Learjet Inc. | 55B | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
| aircraft | Learjet Inc. | 55C | Airworthiness Directives; Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C Airplanes |
Unsafe Condition
Loss of certain navigation signals during extended over-water operation due to Omega navigation system inoperability at certain engine speeds could result in excessive deviation from the intended flight path, leading to potential low-fuel condition or traffic conflict.
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Affected Aircraft
Learjet Model 35, 35A, 36, 36A, 55, 55B, and 55C airplanes equipped with Global Wulfsburg GNS 500, GNS-1000, and GNS-X Flight Management Systems.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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