As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT ENGINE OIL MASTER WARNING IN FLIGHT 5% - EMERGENCY LANDING. REMOVED AND REPLACED PACKING FOR RADIAL DRIVE SHAFT COVER IAW CRJ 550 AMM 72-60-01 PERFORMED HIGH POWER ENGINE RUN IAW CRJ550 AMM 71-50-00 OPS CHECK GOOD NO OIL LOSS AND NO DEFECTS NOTED.