AD 84-19-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet Inc. | 24 | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24A | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24B | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24B-A | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24C | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24D | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24D-A | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24E | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24F | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
| aircraft | Learjet Inc. | 24F-A | Airworthiness Directives; Gates Model 24, 25, 28, 29, 35, 36 and 55 Series Airplanes |
Unsafe Condition
Aileron/trim tab flutter due to a failure or disconnect of the tab control system
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Required Actions
Replace the trim tab balance weight and rebalance the left aileron in accordance with specified modification kits. Special flight permits may be issued under FAR 21.197 to operate to a base for compliance. Alternate means of compliance may be approved by the Manager, Wichita Aircraft Certification Office.
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Compliance Time
Within the next 600 hours time in service, or the next aileron/trim tab removal or rebalance, whichever occurs first
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Affected Aircraft
Gates Learjet Models 24 (serials 100-357), 25 (003-369), 28 (001-005), 29 (001-004), 35 (001-514), 36 (001-053), and 55 (001-105)
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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