What was found
RECEIVED FLAP CONTROL FAULT MESSAGE WHEN SELECTING FLAPS 15. REMOVED AND REPLACED FCU AND LEFT NACELLE ACTUATOR. REFERENCES A/C MM (27-50-08) (27-50-06) OPERATIONAL CHECK GOOD. P/N 347200-1001, S/N OFF 3039, P/N 308200-1007, S/N OFF 016.