As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - FLT 4756 - UPON TAKEOFF ROLL, FLIGHT ABORTED DUE TO THE RIGHT OIL PRESSURE WARNING LIGHT ILLUMINATING ON THE CENTRAL WARNING PANEL AND THE OIL PRESSURE GAUGE READING ZERO. MAINTENANCE FOUND THE RIGHT PROPELLER GEARBOX LUBE PUMP SHEARED. MAINTENANCE REPLACED THE LUBE PUMP. AFTER PERFORMING ALL OPERATIONAL CHECKS, THE AIRCRAFT WAS RETURNED TO SERVICE. (X)