 During one hover test, an instance of pitch instability was revealed, which was found to be due to the bleed air arrangement adopted for the propulsion air, resulting in last-minute corrective changes being carried out during the final three days prior to the craft's maiden flight.On 11 June 1959, the SR.N1 conducted its first flight, demonstrating its capability to cross both land and water, in front of various assembled members of the press.While the demonstration was only intended to involve land-based motion, in response to pressure from enthusiastic journalists, the company decided to proceed with the first water-based flight on that day as well.