wing. This enabled the installation of 29 extra seats, bringing the capacity to 189 passengers. The maximum take-off weight stayed the same since the extra weight was compensated by removing the center wing tanks. Therefore, it can be said that the stretch was a trade of capacity for range. CL-44-O Also known as the Skymonster and CL-44 Guppy. The CL-44-O was a single CL-44D4-2 (c/n 16) converted by Conroy Aircraft, who removed the fuselage shell above the floorline, and rebuilt an enlarged fuselage to make it into a Guppy-type aircraft. It was intended to transport Rolls-Royce RB211 engine pods to the United States for Lockheed's L-1011 TriStar. Operators Civilian operators Four original customers who bought and operated the CL-44D4 were: Seaboard World Airlines, The Flying Tiger Line, Slick Airways and the Icelandic Airlines Loftleiðir. All other operators operated second-hand aircraft. ♠ original operators Transporte Aéreo Rioplatense Aerotransportes Entre Ríos HeavyLift Cargo Airlines was one of the operators of the CL-44 Guppy. Young Cargo Beaver Enterprises (dealer purchased CC-106s from the RCAF) Aerocondor Colombia (bought one CL-44-6 in 1974) AeroNorte Colombia (now Líneas Aéreas Suramericanas) (bought one CL-44J in 1984) Tampa Cargo SAEP Colombia Cyprus Airways (leased one CL-44D4-1 1978–1980) AECA Carga operated CL-44D-4-1 Andes Airlines TACA International Airlines (one CL-44-6 leased in 1974) Skymaster Freight Services SOACO Bayu Indonesian Air Loftleiðir ♠ Aer Turas Trans Mediterranean Airways (leased) United African Airlines later became Jamahiriya Air Transport Cargolux Royal Air Maroc(one aircraft leased in 1980) Aeronaves de Peru Cargosur Transvalair operated two aircraft. BOAC operated a transatlantic cargo service (London-Manchester-New York) with an aircraft leased from Seaboard World Airlines from 1963 until 1965. British Cargo Airlines British Air Ferries Redcoat Air Cargo Transmeridian Air Cargo operated total eight CL-44 including Guppy aircraft. Aeron International Airlines Air Express International Airlift International Cargosur The Flying Tiger Line ♠ Seaboard World Airlines ♠ Slick Airways ♠ Tradewinds Airlines Wrangler Aviation Aero Uruguay Atlantida Linea Aérea Sudamericana (ALAS) Societé Générale d'Alimentation (SGA) (three CL-44-6s from 1973) Tramaco Vic Air Cargo later Virunga Air Cargo Military operators Royal Canadian Air Force ♠ No. 412 Squadron RCAF used two aircraft as VIP transports. No. 426 Squadron RCAF No. 436 Squadron RCAF No. 437 Squadron RCAF received 11 Yukons with two as aerial tankers. No. 4 (Transport) Operational Training Unit RCAF Canadian Forces Accidents and incidents The Canadair CL-44 suffered 21 hull loss incidents during its operational history