As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 7643 - ROC-IAD - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO LOSS OF OIL PRESSURE. AIRCRAFT DIVERTED TO MDT AND WENT TO THE GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND IS THE PROCESS OF REMOVING AND REPLACING LEFT ENGINE. MAINTENANCE REMOVED AND REPLACED LEFT ENGINE, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)