What was found
ON CLIMBOUT, FLT ENG NOTICED FLUX OF 30 TO 40 DEGREES IN R/PACK TEMP AND ABNORMAL LOW R/BLEED PRESS. ALMOST SIMULTANEOUSLY ENG NR 3 OVERHEAT LIGHT ON FLT ENG'S PANEL ILLUMINATED. R/PACK WAS SHUTDOWN AND R/BLEED CLOSED. THE NR 3 ENG STRUT OVERHEAT LIGHT WENT OUT IMMEDIATELY. RAN ALL 3 ENG AT 80 PERCENT AND BOTH PACKS. CND MALFUNCTION, OK FOR SERVICE.