AD 85-22-08 R2
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Learjet Inc. | 55 | Airworthiness Directives; Gates Learjet Model 55 Series Airplanes |
Unsafe Condition
Use of incorrect landing distances due to delayed spoiler extension times and inoperative spoilerons could lead to insufficient landing distance calculations, increasing the risk of runway overrun.
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Required Actions
Insert specified information into the FAA Approved Airplane Flight Manual within 10 hours time-in-service after the effective date. Replace specific paragraphs and notes regarding spoiler operation, landing distance multipliers, and altitude limitations. Remove thrust reverser modifications within 30 days if applicable.
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Compliance Time
within the next 10 hours time-in-service after the effective date of this AD
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Affected Aircraft
Gates Learjet Model 55 airplanes, serial numbers 55-003 through 55-086, except those with Service Bulletin 55-27-7A, Airplane Modification Kit 55-84-7B, or Airplane Accessory Kit 55-83-4.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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