Summary
We propose to adopt a new airworthiness directive (AD) for all Airbus Model A319 series airplanes, Model A320-211, -212, -214, -231, - 232, and -233 airplanes, and A321 series airplanes. This proposed AD was prompted by reports that 67during a full scale fatigue test, several broken frames in certain areas of the cargo compartment have been found, especially on the cargo floor support fittings and open tack holes on the left-hand side. This proposed AD would require a rototest inspection of the open tack holes and rivet holes at the cargo floor support fittings of the fuselage, modification of the fuselage, including doing all applicable related investigative actions, and repair if necessary. We are proposing this AD to detect and correct cracking in the open tack holes and rivet holes at the cargo floor support fittings of the fuselage, which could affect the structural integrity of the airplane.