What was found
PDIS 683 21-01 2532571 08MAR21 FLO ASSGN PACK 2 OVERHEAT WITH BURNING SMELL IN COCKPIT AND TR OUBLE COOLING A/C. BURNING SMELL ALSO NOTICED WITH O NLY PACK 1 RUNNING (NOTE: CREW STATED IT TAKES RUN NING 3 MINS BEFORE SMELL OCCURRED AND HAPPEN WHILE DURING A/I TEST WITH N2 WAS ABOVE 83%) 31347 00 RS PERFORMED OPS CHECK ON PACK SYSTEMS #1 AND #2 IAW AMM 21-51-00-700-802-A. OPS CHECK GOOD. PLANE COOLS AS NORMAL. NO BURNING SMELLS DETECTED. NO OTHER DEFECTS NOTED