Airworthiness directives › 2025-20-01
AD 2025-20-01 Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Applicability*9
This AD applies to the ATR—GIE Avions de Transport Régional airplanes identified in paragraphs (c)(1) and (2) of this AD, certificated in any category, as identified in European Union Aviation Safety Agency (EASA) AD 2025-0004, dated January 7, 2025 (EASA AD 2025-0004). (1) ATR42-500 airplanes. (2) ATR72-101, -102, -201, -202, -211, -212, and -212A airplanes.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
Except as specified in paragraph (h) of this AD: Comply with all required actions and compliance times specified in, and in accordance with, EASA AD 2025-0004.
Unsafe condition
This AD was prompted by an investigation indicating that an erroneous monitoring of the travel limitation unit (TLU) could occur when the airplane is flying above a certain speed as a result of the logic input from either air data computer (ADC) 1 or ADC2 input. The FAA is issuing this AD to address this condition, which if not detected and corrected, could result in the rudder deflection not being limited at high airplane speed, which, if combined with a large rudder pedal input, could lead to the loss of control of the airplane.
Affected ADs
None.
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