What was found
AIRCRAFT LOST PRESSURIZATION AT FL 350. SELECTED COLDER TEMPATURE AND MANUAL CONTROL OF PRESSURIZATION. CREW DID RAPID DEPRESSURIZATION CHECK LIST AND EMERGENCY DESCENT TO FL 200. PACKS COOLED, CLIMBED TO FL 250. TEMPATURE CONTROL SELECTED TO MANUAL MODE AND PRESSURIZATION REMAINED IN AUTO. PERFORMED TEST OF PRESSURIZATION, TEMPATURE CONTROL AND THERMAL SHUTDOWN SYSTEMS, OPS CHECK GOOD PER DC-9 MM.