Among jets I think the BAC1-11 will be up there somewhere, BUA, BA, Court Line, Dan Air, BIA etc. and overseas too, the biggest operator of all was Allegheney in the USA.
(Wikie talks about American Airlines being the largest operator but it was Allegheney before they were bought out by AA I think?)
Last edited by parabellum; 22nd Dec 2012 at 23:40.