Superseded. This AD was superseded by AD 2023-19-07. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2021-10-20
Effective 05/14/2021 · Published 05/14/2021
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 ATR72-212A airplanes. This AD was prompted by reports of temporary loss of all display units and the integrated electronic standby instrument (IESI). This AD requires revising the existing aircraft flight manual (AFM) and applicable corresponding operational procedures to update a syste…