The fourth of Bell's pastel prototypes for their new single engine design is the third flight test vehicle. C-FTVQ was registered June 2015 and retired in 2021, the registration cancelled September 23, 2021. The second Bell 525 Relentless is packing up in the background.

Airbus Helicopters demonstrator N154AH was built in 2013. Placed with Air Methods in 2017, the helicopter has been flying for St. Louis Children's Hospital since 2018 with call sign "Kids Flight 1".

Ohio based MedFlight provides not-for-profit critical care transportation.

Bell V-280 Valor tilt-rotor is designed for the Joint Multi-Role (JMR) Technology Demonstrator (TD) program supporting the Future Vertical Lift (FVL) program of the US Army. The building of the prototype had advanced to about 25% when this company mock up was displayed at HAI Heli-Expo in Louisville. The aircraft first flew on December 18, 2017 and has been undergoing development flight testing in Texas.

Taking a break from development flying, the second Bell Relentless prepares for departure after being displayed at Heli-Expo 2016.