Two pilots failed to notice when the tail of their aircraft hit the runway as they landed at Glasgow Airport, a report has found.

The British Airways Airbus A321 was carrying 200 passengers from Heathrow when the incident happened around 9.30pm on July 19, 2015.

After touching down, the aircraft "bounced slightly", after which its nose pitched up, according to a report from the Air Accidents Investigation Branch (AAIB).

During the second touchdown, the Airbus' tail hit the runway surface.

No one was injured in the landing but the aircraft suffered "substantial" damage, although neither of the two pilots realised anything had gone wrong.

An investigation was launched after members of the cabin crew reported an "unusual" noise on landing.

A member of the public also called Glasgow's air traffic control after seeing sparks coming from the aircraft as it touched down.

The AAIB report said: "It is difficult to pinpoint a precise reason why this tail strike occurred ... but it is likely to have been the result of a combination of factors."

These include an airspeed that was too slow at time of landing and the aircraft's pitch continuing to increase after the first touchdown, investigators said.

They also noted that the co-pilot - who was in control during the landing - recalled he had been told during training that the correct landing pitch was 11 degrees. The correct figure is actually 9.7 degrees.

As a result of the investigation, BA has implemented further training for pilots and is looking into introducing an "experience restriction" for the A321.