A Lufthansa Airbus A319-100, registration D-AILU performing flight LH-2004 from Munich to Dusseldorf (Germany), was accelerating for takeoff from Munich's runway 26L when the crew rejected takeoff at high speed (84 knots over ground) due to a left hand engine (CFM56) fire warning. The aircraft slowed safely and stopped on the runway. The crew requested emergency services to attend and asked another Lufthansa crew waiting for departure whether they saw any fire/smoke from the left or right hand engine, the crew responded everything looked normal, tower confirmed using binoculars he couldn't see anything out of the ordinary. The crew susbequently taxied the aircraft off the runway and stopped again after crossing the hold short line for an inspection by emergency services. Emergency services reported seeing slightly higher temperatures on the left engine than on the right engine, there were no leaks or contaminations. The crew suspected a false fire warning and taxied the aircraft back to the apron.
A replacement A319-100 registration D-AILA reached Dusseldorf with a delay of 100 minutes.
The aircraft is still on the ground in Munich about 9 hours after the rejected takeoff.