What was found
MSP-MIA, DURING TAKEOFF, THE AMBER AFT AIRSTAIR WARNING LIGHT ILLUMINATED AND REMAINED ON. AFTER COMMUNICATION BETWEEN THE FLIGHT CREW, DISPATCH, AND MAINTENANCE THE FLIGHT CONTINUED TO MIA. EMERGENCY EQUIPMENT WAS CALLED OUT, BUT NOT USED AND THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. REPLACED THE UPLOCK SWITCH, CHECKED OK.