What was found
STAB AND MACH TRIM MASTER CAUTION AT FL320, WOULD NOT REENGAGE. LANDED AT FLAPS 20, BRAKE TEMPS AT 6,6,7,7 RESPECTIVELY. FLIGHT 5900 - FILED CLOSED. PERFORMED VISUAL INSPECTION AND OPERATIONAL CHECK OF THE MAIN LANDING GEAR BRAKES WITH NO DEFECTS NOTED IN REFERENCE TO CRJ 200 AMM. PLEASE REFERENCE AML 483422 FOR STAB AND MACH TRIM MASTER CAUTION AT FL320.