During the production of the third season, special effects supervisor Dave Gauthier constructed an elaborate mock-up of a Boeing 737 airplane in order to be able to simulate a crash [REF].
Gauthier's 737 rig-which required 400USgal of hydraulic fluid to construct-was designed to move across multiple axes in order to better simulate turbulence; it could rotate 22 degrees each way about its length, and move four feet to either side [REF].