Not to sure where to post this but here it is ..To transport a 500 heliocopter try this,,,series one 49 note keyboard bag.uss1-49...www.ultimatesupport...it is 178mm(7in) depth,952mm(37in) wide, and 406mm(16in )tall...fill from foam cut to your needs..my dx6 fits in front pocket.and has two other pockets on the front..works really good for me..hope this can help a few looking for a case ...