A passenger jet was within just 100ft of colliding with a drone as it came in to land at Glasgow Airport.

The Boeing 737 was flying 800ft above Glasgow as it prepared to land on March 6 this year when the near miss happened.

An investigation into the incident by the UK Aviation Board (UKAB) found the pilot of the jet had no time to take action to avoid a crash with the drone. The board ruled there was a "definite risk" of a collision.

The pilot reported the drone to the Glasgow air traffic controller after flying 100ft over the device. The operator of the drone has never been found.

The UKAB found the operator of the drone contravened regulations because of the altitude and location it was being flown at.

A UKAB report into the incident states: "The board quickly agreed that the drone was being operated at an altitude and location that contravened regulations, and hence was flown into conflict with the B737, which was on final approach to Glasgow inside the Class D airspace of Glasgow.

"The reported separation was 100ft vertically above the drone when sighted, but the B737 was descending which would have further reduced the separation as it flew over the drone and the pilot did not have time to take avoiding action.

"As such, members agreed that there had been a definite risk of collision."