Submit your machine then wait to see if it appears here and on the IsItABird Yahoo video channel. We're only showing the latest 10 videos below but loads more are shown over at Yahoo Video - click here to view and rate.
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Remember, these are just the latest 10 entries, click here now to view all the videos and rate your favourite!
Cam's Nike Airplane Watch this video
Crazy Stunt Plane Watch this video
Will's Marvellous Machine Watch this video
Laurence from Watford Watch this video
Joshua's plastic bottle machine Watch this video
Crash and burn!! Watch this video
James' magnificent flying machine Watch this video
Eoghan and his special paper plane Watch this video
Alex's giant plane Watch this video
Surely that will never fly? Watch this video