What was found
LITE SMOKE IN CABIN AND COCKPIT ASSOCIATED WITH A/C SMELL WITH SMOKE. CABIN AND COCKPIT COOL AIR VERY INEFFICIENT. AIR FORCEFULLY BLOWING OUT OF RT RAM COOLING DOOR. LOST PRESSURIZATION IN CABIN WHEN THROTTLES ARE AT IDLE. FOUND HI PRESS REG SENSE LINE FOR NR 1 ENG SPLIT. REPLACED LINE, RAN ENGS AND ALL CKED OK NO HINT OF SMOKE, PACKS COOL. PRESSURIZED A/C TO 3 PSID, MAINTAINED PERFORMED ACCEL-DECELL, ALL ENGS CKS GOOD.