Airmails: Crash Mail: ?1974 Dubai Hijack, cover from England to Western Australia with strike of “DELAYED EN ROUTE/AIRCRAFT HI-JACK” in violet. On Nov. 21 hijackers boarded BA870 at Dubai and forced the crew to fly to Tripoli and Tunis. After an ordeal totalling 84 hours and the execution of a German banker a deal for surrender was agreed. Photo. (Image1)