AD 99-09-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-200 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-300 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-320 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR42-500 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR72-101 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR72-102 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR72-201 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR72-202 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR72-211 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport Régional | ATR72-212 | Airworthiness Directives; Aerospatiale Model ATR42 and ATR72 Series Airplanes |
Unsafe Condition
Prolonged exposure to severe icing conditions outside the certification envelope may result in reduced performance and controllability due to stall.
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Required Actions
Revise the Airplane Flight Manual (AFM) Limitations and Emergency Procedures sections to include modified procedures and criteria for early detection of severe icing, and increase speed during exit maneuvers to improve stall margin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 days
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Affected Aircraft
Aerospatiale Model ATR42 (all series) and ATR72 (all series) airplanes certificated in any category.
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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