Parts of the wings and fuselage were reinforced and outfitted with flush riveting for increased strength and reduced drag over the Sling 4.

[4] The UK Light Aircraft Association has limited the airframe safe life to 1600 hours due to a stress point in the wing design.

Later, operating off of a dry lakebed in the high desert, with temperatures of 100 degrees, we never had to worry about engine cooling - and it handled like a fine touring machine.

"[4] A company demonstrator Sling TSi flew non-stop from Torrance, California, to Tampa Executive Airport on its way to Lakeland, Florida for Sun 'n Fun 2019 in 13.5 hours.

[7] In July 2019 the company did a ceiling expansion test and flew non-stop from Torrance, California to Wittman Regional Airport to attend EAA AirVenture Oshkosh for 9.75 hours.