UA946 Washington–Amsterdam flight reportedly diverts to St. John’s, Canada

UA946, United Airlines’ flight from Washington Dulles to Amsterdam, was reported to be diverting to St. John’s, Newfoundland, after transmitting the general emergency transponder code 7700.

The initial flight-tracking alert indicated the aircraft was changing course toward the Canadian airport. The diversion and landing status could not immediately be independently confirmed.

UA946 emergency: Cause not yet confirmed

Code 7700 alerts air traffic controllers to an emergency but does not identify its cause.

The supplied report did not specify what prompted the signal or provide information about conditions aboard the aircraft.