The Ryanair plane from Alicante to Newcastle declared an emergency air raid and is thought to have landed in Bordeaux.
The FR4079 was due to arrive at Newcastle Airport at 10.30 am, when it took out 7700, which is a general alert.
According to the websites of the flight, the plane then turned and headed to Bordeaux, which was close to him.
In order to deploy for the runway, he performed a small loop before entering the land.
The nature of emergencies is not known at this stage.
Ryanair is available for comment.