DC-10 Undifferentiated or Other Model
Flight Crew Air Transport Pilot (ATP)
Workload; Situational Awareness
Inflight Event / Encounter Weather / Turbulence
Flight Crew Rejected Takeoff
Weather
Rejected two takeoffs attempts at 80 KTS for cockpit head windshear indication. Successful departure on third attempt. Winds were down the runway at 15 KTS gusting to 25 KTS. Uneventful landing at destination. [We need] better windshear monitoring equipment with ATC.
The Reporter stated that he believed the windshear warning system was functioning normally and that the alerts were accurate. The crew did raise and then lower the flaps after the second rejected takeoff to reset the system and the third takeoff was successful although conditions were turbulent.
A DC-10 crew rejected two takeoffs for what they believe were valid windshear warnings but were successful on the third attempt.