Two airplanes have been involved in a minor collision at East Midlands Airport during morning fog.
An eyewitness waiting to take off on another plane said one aircraft on the ground appeared to clip a stationary plane at about 07:50 BST.
A spokesman for the airport said it involved Ryanair and Jet2 planes but there were no passengers on board either at the time.
Some flights were delayed and the airport said it was investigating.
Ryanair said its plane was a training aircraft and the crew was following instructions from airport traffic control when the wing tip hit the Jet2 plane.