AD 91-22-51
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 757-200 Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-200CB Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-200PF Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
| aircraft | The Boeing Company | 757-300 Series | Airworthiness Directives; BOEING Model 757 Series Airplanes |
Unsafe Condition
Separation of the trailing edge wedges from the airplane due to delamination and physical damage.
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Required Actions
Perform close detailed visual inspections and 'coin-tap' inspections of trailing edge wedges of slats 1 through 4 and 7 through 10 for delamination and physical damage in accordance with Boeing Alert Service Bulletin 757-57A0045. Repairs or replacement must be done prior to further flight if delamination or damage is found. Inspections must continue after repairs or replacements.
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Compliance Time
Within the next 10 calendar days after the effective date (January 24, 1992) for airplanes with 5,000+ flight hours as of that date, and thereafter every 300 flight hours. For airplanes with less than 5,000 flight hours as of the effective date, inspections within next 300 flight hours and thereafter every 300 flight hours. 'Coin-tap' inspections must be done within 300 flight hours after effective date and repeated every 1,500 flight hours.
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Affected Aircraft
Boeing Model 757 series airplanes, line numbers 140 through 335, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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