Regional Jet 700 ER/LR (CRJ700)
Dispatch Dispatcher
Communication Breakdown
Deviation / Discrepancy - Procedural Other / Unknown
Flight Crew Rejected Takeoff
Company Policy; Human Factors; Procedure
METAR changed requiring an alternate on several short flights. During this time I checked to ensure which flights were able to receive messages provided by their out times. After some time spent completing other flight releases; I provided the updated Dispatch Report with an alternate to a flight. Shortly thereafter I was informed that a fellow Dispatcher had received a message from that flight indicating that they had performed a rejected takeoff after receiving an ACARS message; apparently from me. This message was intended for their inbound leg. The primary cause is that I sent the crew the updated ACARS message while they were apparently in sterile; causing the RTO (Rejected Take-Off). Solutions to prevent the transmission of noncritical ACARS messages when in sterile cockpit need to be provided.
Dispatcher reported a flight crew aborted their takeoff when they received an ACARS message with an updated dispatch release.