June 1923. Rather late in the day, Marais realised that the Anzani engine did not meet the competition's all-French requirement and he was unable to find a French aircraft engine supplier with an available replacement. He was a registered contestant in the Grand-Prix and was reported before it began to be using a French motor-cycle engine, but there was no further mention of him at the event. Instead, he modified the aircraft into a glider, with some adjustment of the pilot's position to return the centre of gravity to its proper position after removing the engine. It then went to the Congrès de Vauville in August, a contest including both gliders and low-powered aircraft. His usual pilot, Collangettes, had been seriously hurt in an accident while flying another aircraft, so Marais had to fly it himself. He took off on 24 August 1923, the last day of qualification, but almost immediately the wind caught him and the glider stalled and crashed. Happily he walked away and his aircraft was not too badly damaged but it failed to qualify. At the end of the contest the jury presented him with two special awards for his efforts. Specifications Notes References 1920s French sport aircraft Mid-wing aircraft Single-engined tractor aircraft Aircraft first flown in 1923