It was also developing the Kestrel K-350 turboprop aircraft but suspended the design in 2017 due to financial and legal challenges.

[5] One Aviation had a unified management and business operation along with a single supply system and marketing and sales team, but the two previous manufacturing lines continued at their then-current locations: Albuquerque, New Mexico and Chicago, Illinois for the Eclipse, and Superior, Wisconsin and Brunswick, Maine for the Kestrel.

[5] The merger of Eclipse and Kestrel to form the new company was announced on 15 April 2015 at the AERO Friedrichshafen aviation trade show.

The company suspended the Kestrel K-350 project and in March 2017 announced that it would phase out Eclipse 550 production, to concentrate on the EA700.

[8] In October 2017 the state of Wisconsin announced that it would commence legal action against the Kestrel Aircraft division of One Aviation for failure to repay US$4M in loans, plus more in tax benefits, given to the company since 2012 to develop the K-350.

[7] Also in October 2017, the company was evicted from its Brunswick facility after falling more than a year behind on rent[9] and laid off workers at all four locations, a move it said was part of transitioning production from the EA550 to the EA700.

[11] On May 8, 2018, One Aviation paid $162,000 and requested a financial agreement through its restructuring but on May 16, the city refused and served a notice of eviction.

[12] At the end of May 2018, Citiking International US LLC, incorporated in Delaware seven months prior, settled all owed back rent, with $1,081,657 paid to the city.