AD 2025-24-09
Effective 01/13/2026 · Published 12/09/2025
Airworthiness Directives; ATR-GIE Avions de Transport Régional Airplanes
Summary
The FAA is adopting a new airworthiness directive (AD) for all ATR--GIE Avions de Transport R[eacute]gional Model ATR42 and Model ATR72 airplanes. This AD was prompted by a design review that determined that the inspection interval of the pressure regulator and shut-off valve (PRSOV) functional test must be reduced to meet the design safety objectives, due to a risk of dormant failures. This AD requires repetitive f…