Summary
We propose to adopt a new airworthiness directive (AD) for all ATR--GIE Avions de Transport Regional Model ATR42 airplanes. This proposed AD was prompted by several reports of a cracked floor beam at frame (FR) 26, and of discrepancies in certain wing inspection tasks in maintenance documents that could lead to errors in scheduling inspection intervals of structurally significant items (SSIs). This proposed AD would require repetitive inspections of certain floor beams and revision of the maintenance or inspection program to include inspections of several areas of the wings. We are proposing this AD to detect and correct any cracking of the floor beam at FR 26 and several areas of the wings, which could lead to reduced structural integrity of the airplane.