AD 88-15-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-200 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-300 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-320 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Series Airplanes |
| aircraft | ATR - GIE Avions de Transport R gional | ATR42-500 | Airworthiness Directives; AEROSPATIALE Model ATR-42 Series Airplanes |
Unsafe Condition
Excessive loads on the vertical stabilizer due to dual hidden failures in the elevator trim system.
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Required Actions
Inspect the trim system per Service Bulletin ATR42-27-0010 within 100 hours time-in-service and repeat every 200 hours. Install spike suppression circuits, elevator trim dissymmetry monitoring with alarm, and modify crew warning system within 1,500 hours time-in-service. Update AFM with taxi procedure check.
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Compliance Time
Within 100 hours time-in-service after August 11, 1988 (for inspections) and within 1,500 hours time-in-service after August 11, 1988 (for installations/modifications).
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Affected Aircraft
AEROSPATIALE Model ATR-42 series airplanes listed in specific service bulletins: ATR42-27-0010, Operational Engineering Bulletin 17, ATR42-27-0015 Rev 3, ATR42-30-0010 Rev 2, and ATR42-21-0009 Rev 4.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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