Aeropostal Alas de Venezuela Colombian airline, LANSA. Until TACA de Venezuela was completely absorbed by LAV in 1958, the route to Bogotá was flown using TACA aircraft in TACA livery. During the 1950s, LAV opened a transatlantic service and began flying to Panama (in 1953). The Constellation fleet was upgraded to L-1049G Super Constellations. An order for the first jet airliner, the De Havilland Comet 1, was placed, but with the Comet crashes of the 1950s, the airline never got their Comet jets. On 24 March 1956, LAV introduced its first turboprop, a Vickers Viscount 701 which was to replace the older piston engined
Kuznetsov NK-12 the NK-12MA. The NK-12 remains the most powerful turboprop engine to enter service although the Progress D-27 and Europrop TP400 have come close to this (in 1982 and 2005 respectively). Another engine of similar size, the Pratt & Whitney T57 with 15,000 shp and 5,000 lb jet thrust, ran 3,100 hours before being cancelled in 1957. The NK-12 powers the Tupolev Tu-95 bomber and its derivatives such as the Tu-142 maritime patrol aircraft and the Tupolev Tu-114 airliner (with NK-12MV), which still holds the title of the world's fastest propeller-driven aircraft despite being retired from service in 1991. It also