What was found
DFW - FLT 3537 - APPROX 5 MINUTES PRIOR TO LANDING, FLIGHT ATTENDANT REPORTED SMELLING RUBBER/ELECTRICAL ODOR IN CABIN AREA ROW 5, FLT CREW INCREASED CABIN PRESSURIZATION AND ODOR DISAPPEARED. AIRCRAFT LANDED SAFELY AND TAXIED TO PARKING AREA. GROUND RUNS PERFORMED AND OPS CHECKED AIRCRAFT. UNABLE TO DUPLICATE ANY ODOR OR RUBBER/ELECTRICAL SMELL. AIRCRAFT WAS RETURNED TO SERVICE. (M)