What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED DUE TO: "SLAT DRIVE MESSAGE SHOWED UP DURING FLAP AND SLAT RETRCATION AFTER TAKEOFF, THIS IS A REPEAT ISSUES, AIRCRAFT AIR INTERRUPTED BACK TO AND LANDED SAFELY AT BCN. REMOVE AND REPLACED NUMBER 8 SLAT OUTBOARD GEARED ROTARY ACTUATOR (AALA202501230148), REMOVE AND REPLACED NUMBER 8 SLAT INBOARD GEARED ROTARY ACTUATOR (AALA202501230117), AND PINION GEAR (AALA202501232751). PER EA 361242.