AD 98-21-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-200 | Airworthiness Directives; Aerospatiale Model ATR42-200 and -300 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-300 | Airworthiness Directives; Aerospatiale Model ATR42-200 and -300 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-320 | Airworthiness Directives; Aerospatiale Model ATR42-200 and -300 Series Airplanes |
Unsafe Condition
Fatigue cracking of the lower skin panels of the outer wings between ribs 13 and 18, leading to reduced structural integrity of the airplane.
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Required Actions
Perform an ultrasonic inspection for cracking of the lower skin panels of the outer wings per Service Bulletin ATR42-57-0040, repair any detected cracks before further flight, and modify the panels with a follow-on HFEC inspection per Service Bulletin ATR42-57-0038 Rev 2.
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Compliance Time
Prior to 25,500 total landings or within 500 landings after 11/12/1998, whichever is later for inspections; prior to 32,500 total landings or within 500 landings after 11/12/1998, whichever is later for modifications.
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Affected Aircraft
Aerospatiale Model ATR42-200 and -300 series airplanes where Service Bulletins ATR42-57-0040 and ATR42-57-0038 Rev 2 have not been accomplished, excluding those with ATR Modification 2805.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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