nistration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A318, A319, and A320 series airplanes; Model A330-200, —200 Freighter, and —300 series airplanes; and Model A340-200, —300, —500, and —600 series airp