AD 91-02-09
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-200 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-300 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-320 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-500 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR72-101 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR72-102 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR72-201 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR72-202 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR72-211 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR72-212 | Airworthiness Directives; AEROSPATIALE Model ATR42 and ATR72 Series Airplanes |
Unsafe Condition
False indication of low hydraulic fluid level leading to unnecessary shutdown of the hydraulic system pump.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a test of both hydraulic low level electrical circuits within 7 days after the AD's effective date using specified service bulletins. Repair crossed connectors prior to further flight if found. Alternate compliance may be approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 7 days after the effective date of this AD
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Model ATR42 and ATR72 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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