What was found
DURING FLIGHT 3208, CARGO 2 EXTINGUISH LIGHT ILLUMINATED. AIR TURNBACK TO MSP. MAINTENANCE REPLACED NR 2 FIRE EXTINGUISHER PER TASK CARD 262203, P/N 36500007-1, S/N OFF 2921301, S/N ON 2801421, CARTRIDGE P/N 30903890, S/N OFF 018FM, S/N ON AEN1-7.