Charlie's Flying Boat: The only affordable holiday

The second book in the Charlie series. Charlie and his family are so stressed out they want a holiday. There are too many of them so Charlie makes an enormous flying boat to be launched from the tree house it has huge yellow wings . He hopes they won't crash. When people find out about it the insist upon coming too so the boat becomes bigger and bigger and longer and longer. Uncles and neighbors come cats and dogs even some of the crows come for a free ride.