For Brickvention 2013, Australian LEGO master builder Ryan "The Brickman" McNaught built what is probably the largest helicopter ever made out of LEGO bricks. The 4 m (13) long Erickson Air-Crane model is made out of 100,000 bricks (that's a lot of orange bricks!) It took Ryan more than a month to design and build the beast.
Link: Ryan's Flickr Page | Ryan's Official Website - via The Daily What