What was found
NR 1 ENGINE LOW OIL PRESSURE LIGHT CAME ON IN CLIMBOUT. OIL TEMPERATURE 153 DEGREES, CSD TEMPERATURE 120 DEGREES. LIGHT WOULD NOT GO OUT WITH ENGINE AT IDLE. SHUT DOWN NR 1 ENGINE AT 2140. LUBED FUEL PUMP AT 0340. OIL PRESSURE 26 PSI IN FLIGHT AFTER SHUTDOWN. DID NOT GO BELOW 5 PSI UNTIL AFTER LANDING. NOTE: OIL PRESSURE AT SHUT DOWN 55 PSI. PRELIMINARY FINDINGS FOUND DIFFUSER CASE CRACKED. REMOVED AND REPLACED NR 1 ENGINE IAW ABX JOB CARD 7001.