On January 4th, 2015 AXIS Flight School created an experimental dive pool for what was then referred to as XRW (Extreme Relative Work). This is a still developing discipline where canopy and wing-suit pilots build formations. In essence, an XRW skydive is a dissimilar formation flight.

Photo courtesy of Dan Dupuis.
The first dive pool developed by AXIS was called XF. The name change from XRW was proposed similar to how RW (Relative Work) was changed to FS (Formation Skydiving); and since CF (Canopy Formation) is already taken, the XF abbreviation was introduced for “Cross” Formation. The first draft only had 3 Randoms and 6 blocks.

Dive pool images from 2015
Since wing-suit technology has dramatically increased flight performance over the past few years, new formations have become possible. The updated 2020 version now features 8 randoms and 10 blocks dispersed over three classes: intermediate, advanced, and open. In addition, the XF rules have been updated to evolve with the times and practitioners can even make use of the AXIS DrawGenerator. There are now two orientations for the wing suit pilot to fly in:
- Normal (belly to earth) – indicated in gray, and
- Inverted (back to earth) – indicated in red.
Back in the day 🙂
AXIS coach Niklas Daniel started experimenting with XF back in April 2010, and has posted videos and written articles about the subject.
2010 – Nik’s first few attempts at Skydive Elsinore.
2011 – Training Camp at Skydive Arizona
2011 – MOAB Boogie.

Photo by Taya Weiss.
2014 – Getting a bit braver. Post by Blue Skies Magazine.
2015 – XF gets some exposure on Discovery Canada with first 3-way Night Formation.
Continued fun, experimentation, and introducing the discipline to others.

Wing-suit pilot and photo by Alex Swindle.