Airworthiness Directives; Air Bus Model A320 Series Airplanes

This amendment adopts a new airworthiness directive (AD), applicable to certain Airbus Model A320 series airplanes, that requires inspections to determine the gap of the seat track joints at frame 64, and correction of discrepancies. This amendment also requires eventual modification of the seat tracks on all affected airplanes, which terminates the requirement of repetitively removing or repositioning the seats. This amendment is prompted by in-service inspection reports, which have revealed that a gap between the forward and aft seat track at frame 64 could exceed the tolerance limit due to a method used on the assembly line to control the position of the seat track. The actions specified by this AD are intended to ensure that the gap of the seat track joints do not exceed the tolerance limit and subsequently lead to separation of the passenger seats from the seat track under emergency landing conditions.