[2] The pilot and six passengers were killed, prompting the Civil Aviation Authority to introduce rules preventing passengers from being carried during air displays.

[3] During the Biggin Hill Battle of Britain airshow, the Invader made a fast run along the crowd line at 150 feet (46 m) then attempted to carry out either a barrel-roll or a wing over.

When the aircraft was inverted the roll rate increased and it dived into the ground in the valley at the end of the runway.

[4] The Douglas A-26 Invader was an American medium bomber built for the United States Army Air Force around 1943.

[4] It was sold after the war and was operated from England since the mid 1970s as a warbird in USAAF markings as "322612", with the nickname "Double Trouble".