Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 210; Flight Crew Total 31500; Flight Crew Type 20000
Human-Machine Interface
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff; Flight Crew Returned To Gate; General Maintenance Action
Aircraft; Human Factors
Around 100 KTS on the takeoff roll I noticed the number one engine oil quantity at 40% and falling rapidly. As it approached 30% I rejected the takeoff. The runway was dry and clear and we successfully rejected with plenty of runway left as we taxied off the runway.  We returned to the gate for Maintenance.  I rejected the takeoff for this event because I was not sure of being able to safely get airborne if the engine oil was rapidly depleted to zero.
Air Carrier Captain notices number one engine oil quantity dropping during takeoff and rejects above 100 KTS.