Sonic boom heard after RAF scrambled to incident

An east and east of England was reported to be a sonic explosion.

Essex, Cambridgeshire, Suffolk, Kent and London were heard about 11:35 BST.

The RAF was launched to accompany a civilian aircraft that lost its contact with air traffic control, Air Traffic Control.

A spokesman said: “The communication was re -established and the aircraft was accompanied by Stansted. Tayfuns are back to the base.”

A plane occurs when an airplane travels faster than sound speed, producing shock waves that quickly compresses the air and produces an explosive noise.

The sound rate varies depending on the height, while 18,300m (60,000 ft) approximately 660Mph (1,060km/s).

The sound, which is usually defined as an explosion or thunder, can be heard in a large area because it moves by plane similar to a boat spreading behind a ship.

Essex police said he started to receive a Sonic Boom reports at 11:40.

A spokesman said: “After losing its contact with the ground, a flight was accompanied by Stansted Airport.

“The contact with a plane traveling from Nice was re -established and accompanied by the shelf plane.

“On the ground, our officers have determined that they were not worried.”