Psy-trance group based in Paris, France, created in 2004 with a desire to bring something new to the psychedelic scene. After a few months of collaboration, they rapidly got their first live set ready and played for the first time at Rahkti Dei festival in Belgium.

Pierre and Remy stopped producing psy-trance for a few years focusing instead on their techno project. In 2015 Principles Of Flight started to produce psychedelic music again.