Turboprop on 20 September 1945. From their experience with the Trent, Rolls-Royce developed the Rolls-Royce Clyde, the first turboprop engine to be fully type certificated for military and civil use, and the Dart, which became one of the most reliable turboprop engines ever built. Dart production continued for more than fifty years. The Dart-powered Vickers Viscount was the first turboprop aircraft of any kind to go into production and sold in large numbers. It was also the first four-engined turboprop. Its first flight was on 16 July 1948. The world's first single engined turboprop aircraft was the Armstrong Siddeley Mamba-powered Boulton
1958 London Vickers Viking accident 1958 London Vickers Viking accident The London Vickers Viking accident occurred on 2 September 1958 when an Independent Air Travel Vickers VC.1 Viking (registration "G-AIJE"), loaded with two Bristol Proteus turboprop engines as cargo, and with three crew members aboard, attempted a flight from London Heathrow Airport to Tel Aviv via Nice, Brindisi and Athens. The aircraft took off from Heathrow at 05:54 Greenwich Mean Time (GMT) but 15 minutes after take off the flight crew reported engine problems and requested a return to Blackbushe Airport. The crew was cleared by Air Traffic Control to descend to 3000 feet, but