“Fuel is stored in the wings, so once a wing breaks, the potential for a fire is significant.
“So it’s not certain that if the wall hadn’t been there, the outcome would have been very different.”
Mr Kingswood said he would be “surprised if the airfield did not meet all the requirements according to industry standards”.
“I suspect that if we went around the airfields at many of the major international airports … we would find a lot of obstacles that could also be blamed for the danger,” he added.
Aviation analyst Sally Gethin questioned whether the pilot was aware of the barrier, particularly given that the plane was approaching from the opposite side of the normal approach.
She told BBC News: “We need to know if (the pilots) were aware of the hard limit at the end?
“If the control tower ordered them to cancel the use of the runway for the second time, that should be revealed during the investigation of the black boxes.
“I think there are a lot of questions.”
