Type 818 Production variant for Cubana with Dart 525 engines and 52 seats, four built, first delivered in October 1958. Type 819 Production variant for Aviacon with Dart 525 engines, not built. Type 820 Production variant for American Airlines with Dart 525 engines, not built. Type 821 Production variant for Eagle with Dart 525 engines, not built. Type 822 Production variant for LAV with Dart 525 engines, not built. Type 823 Production variant for California Eastern with Dart 525 engines, not built. Type 824 Production variant for LAI Dart 525 engines, not built. Type 825 Production variant for Black Lion Aviation with Dart 525 engines, not built. Type 826 Production variant for Agile Azur with Dart 525 engines, not built. Type 827 Production variant for VASP with Dart 525 engines and 56 seats including four-seat rear lounge, six built, first delivered in October 1958. Type 828 Production variant for All Nippon Airways (ANA) with Dart 525 engines and 60 seats, nine built, first delivered in July 1961. Unusual for the time they had television sets mounted on hat-racks for in-flight viewing. Type 829 Production variant for TAP with Dart 525 engines, not built. Type 830 Proposed large-fuselage variant for American Airlines with Dart 525 engines, not built. Type 831 Production variant for Airwork and Sudan Airways with Dart 525 engines and 60 seats, three built, first delivered in July 1961. Type 832 Production variant for Ansett-ANA with Dart 525 engines and 56 seats including a four-seat rear lounge, four built, first delivered in March 1959. Type 833 Production variant for Hunting Clan with Dart 530 engines, three built, first delivered in June 1959. Type 834 Production variant for LOT Polish Airlines with Dart 525 engines, not built. Type 835 Conversion of a not-delivered Type 818 originally for Cubana, delivered in September 1959 for the Tennessee Gas Transmission Corporation. Type 836 Conversion of a not-delivered Type 816 originally for Trans Australia Airlines, delivered in May 1960 to Union Carbide. Type 837 Production variant for Austrian Airlines with Dart 525 engines and either 56 seats (mixed-class) or 66 seats (tourist-class) and a four-seat rear lounge, six built, first delivered in August 1960. Type 838 Production variant for Ghana Airways with Dart 525 engines and 60 seats, three built, first delivered in June 1961. Type 839 Production variant for the Iranian Government with VIP interior, one delivered in February 1960. Type 840 Basic