The Vickers Viscount 720, a British medium-range turboprop airliner, was first flown in 1948 by Vickers-Armstrongs. It was known for its distinctive "Dart" turboprop engines which allowed it to cruise at 250 mph, a significant improvement over contemporary piston-engined airliners. The Viscount 720 model was specifically designed for Trans-Australia Airlines (TAA), with six units ordered at a total value of £1,934,000 including spare parts, according to the Vickers Viscount Network [1]. The aircraft was manufactured in 1954 and assigned serial numbers such as 45, as mentioned in the Wikipedia article about MacRobertson Miller Airlines Flight 1750 [3]. The aircraft was also operated by other airlines such as Air France, as indicated by the aircraft operational records [2].

Regarding ownership, the Vickers Viscount was sold to over 60 operators in 40 countries, with many continuing to operate after refurbishment under new ownership, as stated in the document "VICKERS VISCOUNTS IN AUSTRALIA" [5]. Capital Airlines in the US operated 60 of the type, as mentioned on the BAE Systems website [9]. The Viscount was also involved in accidents, such as the one on 31st October 1954, where the aircraft was owned and operated by Trans Australia Airlines - TAA, with the registration VH-TVA [7].

In summary, the Vickers Viscount 720 had a significant operational history, particularly with TAA, and was owned by numerous airlines worldwide, reflecting its adaptability and the trust airlines placed in its design.