AD 2001-08-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aerospatiale | Model ATR42-200, -300, and -320 Series | Airworthiness Directives; Aerospatiale Model ATR42-200, -300, and -320 Series Airplanes |
Unsafe Condition
Discrepancies of the main landing gear (MLG) barrel lower lugs, which could result in reduced structural integrity and possible collapse of the MLG.
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Required Actions
Perform ultrasonic inspections to detect fatigue cracks of the lower lugs of the MLG barrel. Conduct new repetitive inspections of the rubber sealant to detect shearing, with corrective action if necessary. Perform one-time visual and fluorescent penetrant inspections to detect discrepancies of certain lugs. Refurbish the MLG barrel and swing lever assemblies.
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Compliance Time
Within 24 months for airplanes modified in accordance with Messier-Dowty Service Bulletin 631-32-133; within 42 months for unmodified airplanes.
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Affected Aircraft
Aerospatiale Model ATR42-200, -300, and -320 series airplanes, certificated in any category, except those refurbished in accordance with Messier-Dowty Service Bulletin 631-32-145.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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