Senor de la CiervaÕs Autogiro plane, which crashed at Le Bourget yesterday, will be, it is stated, ready for flying again in eight or ten days. Senor de la Cierva, the inventor, has telephoned to Southampton for a new ÒwindmillÓ to replace the one that was wrecked in the accident. Senor de la Cierva stated, at the reception given to him at the Aero Club, that the accident was caused by his own fault. ÒI am a very bad pilot,Ó he said, Òand ought to have risen into the air without fouling one of the posts.Ó