AD 86-20-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-200 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-300 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-320 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-500 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Airplanes |
Unsafe Condition
Uncommanded pitch excursions may occur during flight in icing conditions at a flap setting of 45 degrees.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Incorporate limitations into the AFM prohibiting flap extension beyond 30 degrees except in emergencies, apply temporary labels within 21 days, and replace with permanent labels and install a flap control stop by December 1, 1986.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within seven days after effective date of this AD for AFM changes, within 21 days for temporary labels, and no later than December 1, 1986 for permanent labels and stop installation.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
AEROSPATIALE Model ATR-42 airplanes (ATR42-200, ATR42-300, ATR42-320, ATR42-500) 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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