Airworthiness Directives; Airbus Model A300 B2 and B4 Series Airplanes

This amendment supersedes an existing airworthiness directive (AD), applicable to all Airbus Model A300 B2, B4-100, and B4-200 series airplanes, that currently requires supplemental structural inspections to detect fatigue cracking, and repair of cracked structure. This amendment requires revising the supplemental structural inspection (SSID) program by changing some of the inspection techniques, changing some of the thresholds and intervals for inspections, expanding the area to be inspected for some of the inspections, and revising the Fleet Leader Program. This amendment is prompted by a review of recent service history and reports received from the current SSID program required by the existing AD. The actions specified by this AD are intended to prevent reduced structural integrity of these airplanes due to fatigue cracking.