The flight appears to have done an abrupt turn towards Edinburgh instead of continuining on its journey to Dublin.
Squawk Tracker via Twitter reported that the plan had emitted the emergency “7700” signal at 10.06 this morning.
It is not clear what has caused the diversion at this time, although a 7700 code typically refers to an engineering issue.
The flight departed 15 minutes late at 9.35 this morning.
It was due to arrive in Dublin at 11.10am.