Commercial Fixed Wing
Dispatch Dispatcher
ATC Issue All Types
Flight Crew Rejected Takeoff
ATC Equipment / Nav Facility / Buildings; Airport
Aircraft X experienced two low speed rejected takeoffs due to predictive windshear alerts. RIC ATC (Air Traffic Control) reported that they regularly experience false windshear alerts during winter months at sunrise. Additionally; another air carrier flight experiences the same phenomenon right before Aircraft X took the runway for their first scheduled takeoff. After deferring the Predictive Windshear Detection and Avoidance System; Aircraft X successfully departed. This faulty windshear phenomenon occurred the previous day as well causing one flight to reject takeoff three separate times.Recommend publishing additional airport information about the faulty windshear detection for the aircrew so the safest decisions can be made while reducing lengthy delays.
The reporter stated that in discussion with the Air Traffic Control personnel working at the airport they mentioned that these false windshear alerts occur regularly mostly during the winter months and usually during the early morning hours.
Dispatcher reported that random windshear alerts occur at RIC airport when no significant weather exists.