variant for Trans Australia Airlines with Dart 510 engines, 44 seats and slipper tanks, seven built, first delivered in June 1956. Type 757 Production variant for Trans-Canada Air Lines similar to the Type 724 but with upgraded 1,600 hp (1,120 kW) Dart 510 engines, 35 built, first delivered in March 1956. Type 759 Production variant ordered by Hunting Clan with Dart 510 engines, 40 or 44 seats and slipper tanks, two built delivered to Icelandair from November 1956. Type 760 Production variant for Hong Kong Airlines with Dart 510 engines, 40 or 44 seats and slipper tanks, two built, first delivered in January 1957. Type 761 Production variant for Union of Burma Airlines with Dart 510 engines and 48 seats, three built, first delivered in July 1957. Type 762 Design for a executive variant with Dart 510s, not built. Type 763 Production variant for Howard Hughes with Dart 510 engines and 48 seats, one built, delivered to TACA Airlines in October 1958. Type 764 Production variant for the United States Steel Corporation with Dart 510 engines, VIP interior and both slipper tanks and a 450 gallon belly tank, three built; first delivered in December 1956. Type 765 Production variant for the Standard Oil (ESSO) Corporation similar to the Type 764. One built, delivered in 1957. Type 767 Production variant for Aden Airways with Dart 510s, not built. Type 768 Production variant for the Indian Airlines Corporation with Dart 510s and 44 seats, ten built, first delivered in August 1957. Type 769 Production variant for PLUNA with Dart 510s, 48 seats and slipper tanks, three built, first delivered in May 1958. Type 770 Basic design for the Type 700D for the United States, not built. Type 771 Basic design standard based on the 745, not built. Type 772 Production variant for British West Indian Airways (BWIA) with Dart 506 engines and 48 seats, four built, first delivered in October 1957. Type 773 Production variant for Iraqi Airways with Dart 506 engines and 48 seats, one built, delivered in November 1957. Type 774 Production variant for Saudi Arabia with Dart 510s, not built. Type 775 Production variant for Yugoslavia with Dart 510s, not built. Type 776 Production variant for Kuwait Airlines with Dart 510s, one converted from a Type 745 in 1958. Type 777 Basic design with Dart 510s, not built. Type 778 Production variant with Dart 510s for Chile, not built.