What was found
DURING FLIGHT 3663 AC DEPARTED MSP. F/O'S EFIS DISPLAY WENT BLANK, LOST LT I/B FUEL PUMP, FLAP TRIM COMPENSATOR, RT COOLING FAN, PRESSURIZATION LT ON ONE CHANNEL AND NR 2 ADC. AIR RETURN TO MSP. MAINTENANCE REMOVED AND REPLACED CB XD11 FOR AC NR 2 BUSS P/N 52653-025, FLO'S OPS CHECK GOOD IAW AVRO MM CHAP 24.