AD 2008-13-19
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Aviat | Various | Airworthiness Directives; ATR Model ATR42-200, -300, -320, -500 Airplanes; and Model ATR72-101, -201, -102, -202, -211, -212, and -212A Airplanes |
Unsafe Condition
Some failures of the Pitot probe heating resistance may not be seen by the low current detection system on aircraft not equipped with ATR Modification 05469. Undetected icing of the pitot probe could produce incorrect airspeed readings, which could lead to loss of control of the airplane.
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Required Actions
Measure the heating resistance of the three pitot probes within 550 flight hours after the effective date. Replace any probe with resistance exceeding 50 ohms before next flight. Repeat measurements every 550 flight hours until the current sensors are replaced. Replace the three pitot probe current sensors within 5,000 flight hours after the effective date.
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Compliance Time
Within 550 flight hours for initial inspection, and within 5,000 flight hours for sensor replacement.
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Affected Aircraft
ATR Model ATR42-200, -300, -320, -500, and Model ATR72-101, -201, -102, -202, -211, -212, and -212A airplanes, all serial numbers, except those with ATR Modification 05469 installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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