The singer and pilot announced last year that he was investing £250,000 in the manufacture of the world's largest aircraft in Bedford, England - which stands at 302-feet long and can stay airborne for up to three weeks.

Dickinson tells the New Yorker: "You want to put a hospital into Africa? You put the whole hospital in the inside of this - whoosh. Start the generator. 'Here's your hospital, buddy!' Job done.