AD 2025-20-01
Effective 11/06/2025 · Published 10/02/2025
Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Summary
The FAA is adopting a new airworthiness directive (AD) for certain ATR--GIE Avions de Transport R[eacute]gional Model ATR42-500 and ATR72 airplanes. 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. This AD…