LONDON – Not many nonagenarians spend their birthdays attached to the wing of a small plane as they hurtle through the air at 500ft, but John Weston is not most 90-year-olds.

The British WWII veteran, who served in the RAF as a rear gunner on a Lancaster Bomber, did the wing-walk on his birthday to raise money for the Alzheimer's Society.

John looked impressively chilled before his flight.

Here he is casually waving, as if he were doing nothing more dramatic than driving down to the local shops.

"It's windy up there!" Weston told the BBC, after his feet were firmly back on the ground.

After losing his wife, Weston wanted to raise money for the Alzheimer's Society.

"For three years [my wife] was reasonably active, then she got very poorly and for the last eight months it was cruel to see her," he said. "She'd lost the use of her arms, legs, speech and couldn't swallow."

Weston's flight took place in Lincolnshire, UK, at Wickenby Aerodrome, and he raised an undisclosed sum for the charity.