RAF Kabrit

Austin flies Whitley Z9159 in a 35-minute experiment to use the rear door from 2,000′. The number of passengers (if any) is not recorded, so it’s not clear whether anyone jumped.

It is not known for certain that the rear door was enlarged, but it would have to have been altered to open inwards before they set out from the UK; and the aperture would almost certainly have been enlarged at the same time.