As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MCI - CREW REPORTED LEFT ENGINE LOW OIL PRESSURE MESSAGE AND PRESSURE INDICATION FLUXUATING IN THE RED, NOTED OIL QUANTITY AT ZERO. CAPTAIN PERFORMED IN-FLIGHT SHUTDOWN OF LEFT ENGINE (SINGLE ENGINE TIME 20 MINS). EMERGENCY DECLARED, FLIGHT LANDED MCI WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT ENGINE AT MCI ON 05/19/2012 DUE TO LEAKING GEARBOX. SYSTEM GROUND CHECK NORMAL OPERATION.