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
Braniff International Airways place in Washington on each flight. Braniff became the registered operator of the planes while on U.S. domestic service, and the planes were physically re-numbered with temporary adhesive vinyl. Registration was then returned to Air France or British Airways on the trans-Atlantic leg. Over American soil, the Concorde was limited to Mach 0.95, though crews often flew just above Mach 1; the planes flew at Mach 2 over open water. Concorde service proved a loss leader for Braniff. Braniff charged only a 10 percent premium over standard first-class fare to fly the Concorde – and later removed the surcharge altogether