What was found
(CAN) PAN PAN DECLARED WITH ATC TO EXPEDITE CLEARANCE. NR 1 AIR CONDITIONING PACK INOPERATIVE AND ON MEL, ENROUTE THE SECOND AIR CONDITIONING PACK FAILED. DESCENDED TO 10,000 FT, INITIALLY PLANNED DIVERSION TO ANOTHER AIRPORT BUT DUE TO HEAVY THUNDERSTORMS AT THE AIRPORT DIVERTED TO ANOTHER. PERFORMED OPS TEST OF PACK 2 IAW AMM. 21-61-00-710-001-A. NO DEFECTS NOTED. ACFT OK FOR SERVICE.