AD 99-18-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-300 | Airworthiness Directives; Aerospatiale Model ATR42-300 and ATR42-320 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-320 | Airworthiness Directives; Aerospatiale Model ATR42-300 and ATR42-320 Series Airplanes |
Unsafe Condition
Cracking of the fastener hole located on the lower surface of the outer wing near the spar/rib 15 junction due to fatigue damage, leading to reduced structural integrity of the wing.
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Required Actions
Perform a high frequency eddy current inspection for cracking and repair if found. Cold work the fastener hole and install a new fastener, following Avions de Transport Regional Service Bulletin ATR42-57-0050.
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Compliance Time
Before the accumulation of 33,000 total landings or within 2,000 landings after the effective date (October 5, 1999), whichever occurs later.
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Affected Aircraft
Aerospatiale Model ATR42-300 and ATR42-320 series airplanes, serial numbers 3 through 59 inclusive.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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