Airworthiness Directives; Airbus Airplanes

We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A300 B4-603, B4-605R, and B4-622R airplanes; and Model A310-304, -324, and -325 airplanes. This proposed AD was prompted by a report of a crack found on door frame (FR) 73A between stringers 24 and 25. This proposed AD would require inspections around the rivet heads of the seal retainer run-out holes at certain frames and corrective actions if necessary. We are proposing this AD to detect and correct cracking of the door frame, which could result in reduced structural integrity of the airplane.