Summary
We propose to adopt a new airworthiness directive (AD) for certain Airbus Defense and Space S.A. (formerly known as Construcciones Aeronauticas, S.A.) Model CN-235-200 and CN-235-300 airplanes. This proposed AD was prompted by reports of false engine fire warning events, which consequently led to engine in-flight shut down. This proposed AD would require modification of the location and routing of the engine fire detection system. We are proposing this AD to prevent unnecessary engine in-flight shut down, which could result in reduced controllability of the airplane.