What was found
FLT 1025 - PIT-ABE - AFTER TAKEOFF, PILOT TRIED TO RAISE GEAR. RECEIVED GRD/FTL CONTROLS, TCAS, AND LIFT DUMPER MESSAGES. RETURNED TO FIELD. MAINTENANCE REPLACED LEFT INBOARD GND/FLT SENSOR. CYCLED GEAR SEVERAL TIMES. ALL CHECKS NORMAL. (M)