AD 2017-09-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | ATR-GIE | Avions de Transport Régional | Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes |
Unsafe Condition
Failure of emergency power supply units (EPSUs) due to defective internal electronic components, which could affect the EPSU internal battery charge, leading to a partial or total loss of emergency lighting.
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Required Actions
Inspect each EPSU to determine the part number, serial number, and amendment level. Replace the EPSU if necessary.
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Compliance Time
Before further flight
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Affected Aircraft
ATR-GIE Avions de Transport Régional Model ATR42-500 airplanes and Model ATR72-102, -202, -212, and -212A airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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