Summary
The FAA proposes to adopt a new airworthiness directive (AD) for certain Airbus Model A319, A320, and A321 series airplanes. This proposed AD would require modifying the floor proximity emergency escape path marking system. This proposed AD is prompted by information that there is not adequate floor path lighting and marking for safe evacuation of the airplane in the event of an emergency. We are proposing this AD to prevent inadequate lighting and marking of the escape path, which could delay or impede the flight crew and passengers when exiting the airplane during an emergency landing.