An Air Europa Boeing 737-800, registration EC-MXM performing flight UX-1026 from Paris Orly (France) to Madrid,SP (Spain), was climbing out of runway 24 when the crew reported they possibly had received a bird strike but want to continue the flight. The crew was handed off to departure and continued the climb asking for a runway inspection, they weren't sure whether the bird may have hit their landing gear. The runway inspection found two dead pigeons on the runway. Climbing through FL120 the crew reported engine trouble with the left hand engine (CFM56), the engine was reduced to idle. The aircraft returned to Orly for a safe landing on runway 25 about 25 minutes after departure.
The occurrence aircraft remained on the ground for about 21 hours, then positioned to Madrid and remained on the ground in Madrid for another 22 hours before returning to service.