As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
97-0162 NR 1 ENG OIL PRESS DROP TO 0 PSI DURING CLIMBOUT. PASSING FLT LEV 250 LOP WARNING LIGHT ILLUMINATED WITH CONTINUOUS CHIME. QUANTITY REMAINED STEADY AT 20 QT. ENG SHUT DOWN AND RETURNED TO LAND IN MEMPHIS, MOTORED NR 1 ENG AND NO OIL PRESS IS EVIDENT FROM PUMP. REMOVED AND REPLACED LUBE PUMP PER M/M 79-21-01, PG 403 THROUGH ITEM 10.