An order for five 500 series One-Elevens to meet the airline's future short-/medium haul requirements started the fleet modernisation process. It was followed by the retirement of the remaining turboprops in BUA's mainline fleet and an evaluation of the Boeing 707 and Super VC10 for its future long-haul requirements, as well as the HS 125 and HP Jetstream as potential replacements for its "third-level" fleet. An important factor in each case was the airline's new strategy to capture a greater share of the non-scheduled market.