Regional Jet 700 ER/LR (CRJ700)
Dispatch Dispatcher
Communication Breakdown
Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Flight Crew Returned To Clearance; Flight Crew Became Reoriented
Human Factors
As I was building the release for this flight; I was getting an error that the drift-down alternates could not be calculated because of an error. [Name] told me to file it and make sure that the drift-down information was on the release. I filed it; checked the release; and the information was missing. After I corrected this issue; I called [the associated ARTCC] to pull the flight strip; sent the correct [flight plan] and sent an ACARS message to the crew and then called Ops to pass the info to the crew to print the new [flight plan]. While the flight was enroute; I got a message from the crew that the route given to them by ATC was not matching what was on the release. I sent him the correct flight summary; the drift-down information and the weather for his escape airport. I then did a pen and ink for the new [flight plan]. The Captain said he was not notified by the gate agent and did not receive the ACARS.There was a breakdown of communication. The gate agent did not notify the crew to print the new [flight plan]; and the crew did not receive the ACARS message. Next time I [will] directly call the Captain and follow up to ensure that they have the correct [flight plan].
An air carrier dispatcher reported a flight departed with out of date information because of a breakdown in communications.