MD-11
Situational Awareness
Aircraft Equipment Problem Critical
Flight Crew Rejected Takeoff
Human Factors; Aircraft
[We] rejected takeoff at about 80 KIAS for a Level One 'GEN 1 OFF' and Level One 'GEN 2 OFF.'  Both warnings went out as soon as I rejected. We complied with Rejected Takeoff QRH procedures. After discussing generator warnings with Maintenance Control; they agreed it would be OK to try another takeoff. On second takeoff at just over 80 KIAS we got a Level One 'GEN 3 OFF' for about one second and then it went out. I continued takeoff with no other problems to our destination and entered this same information in the logbook. After talking to Maintenance in our destination; the Mechanic said the Constant Speed Drives (CSDs) should have been serviced prior to leaving our departure airport.
On takeoff; received Master Caution and Captain called for a reject. I noticed a Gen-1 and Gen-2 'Off' Level One alert that went out very quickly as we were stopping. We did Rejected Takeoff QRH and contacted Maintenance. They advised that if the warnings had gone out we could attempt another takeoff. We also reviewed brake temperature requirements and waited for appropriate time. We attempted another takeoff as there were no warnings or malfunctions displayed. On takeoff roll; we received a momentary Master Caution again. This indication seemed to have happened slightly later in the roll. (We were accelerating very rapidly however since we were a light MD-11). As pilot flying; I never saw the cause and the Captain elected not to reject. After takeoff; he advised we had a Gen-3 'Off' alert flash on and off.We cannot eliminate all rejected takeoffs. The Rejected Takeoff QRH has a lot of verbiage. I did notice that I originally started to pass through it rather quickly to get to the brake temperature information (I had just done a reject in training the week prior). In real time; there is plenty of time to read everything carefully as you wait for the brake temps to peak. I suppose this wasn't something I noticed in training due to the ability of the simulator to be repositioned.
Two pilots report about an initial rejected takeoff of their MD-11 aircraft due to a Level One 'GEN-1' and 'GEN-2 OFF' alert and Master Caution warning. Alert went out before aircraft stopped. During second takeoff attempt 'GEN-3' alert flashed on and off. Maintenance noted the Constant Speed Drives (CSDs) should have been serviced prior to departure.