As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO MEM DUE TO LEFT ENGINE LOW OIL PRESSURE AND THE OIL QUANTITY DROPPING TO 0 DURING FLIGHT. THE AIRCRAFT LANDED SAFELY AT MEM. THE FLIGHT CREW REPORTED THAT THE RED WARNING FOR OIL QUANITY DID NOT DISPLAY UNTIL LANDING AND THEY SHUT DOWN THE ENGINE AFTER LANDING. MAINTENANCE REPLACED THE #1 ENGINE PER TASK CARD 26L40071004.