Air France Flight 4590 crash and possible remedies. Air France's Concorde operation had been a money-losing venture, but it is claimed that the aeroplane had been kept in service as a matter of national pride; British Airways claimed to make a profit on its Concorde operations. According to Jock Lowe, a Concorde pilot, up until the crash of Air France Flight 4590 at Paris, the British Airways Concorde operation made a net average profit of about £30m a year. Commercial service was resumed in November 2001 after a £17m safety improvement service, until the remaining aircraft were retired in 2003. The official investigation was
Concorde United States Government, as it lacked its own competitor. The US, India, and Malaysia all ruled out Concorde supersonic flights over the noise concern, although some of these restrictions were later relaxed. Professor Douglas Ross characterised restrictions placed upon Concorde operations by President Jimmy Carter's administration as having been an act of protectionism of American aircraft manufacturers. Concorde flew to an altitude of 68,000 ft (20,700 m) during a test flight in June 1973. Concorde is an ogival delta winged aircraft with four Olympus engines based on those employed in the RAF's Avro Vulcan strategic bomber. It is one of