What was found
CLT - FLT 1214 - EMERGENCY LANDING - IN FLIGHT, CAPTAIN PRIMARY FLIGHT DISPLAY (PFD), NAVIGATIONAL DISPLAY (ND), AND UPPER ECAM DISPLAY WENT BLANK. FOLLOWED QRM PROCEDURES, ECAM PROCEDURES LOSS OF GEN 1, APU WOULD NOT POWER AC BUS 1. ALSO HAD AN INOPERATIVE NOSE WHEEL STEERING. DECLARED EMERGENCY LANDING. REMOVED AND REPLACED TRANSFORMER RECTIFIER (TR1) PER AMM 24-32-00-710-001. OPERATIONAL CHECK WAS GOOD.