The interplane gap was large, with the upper plane held high above the fuselage by a set of four vertical centre section struts.

Its tailplane and elevators were fixed to the top of the fuselage; it had a triangular fin and a rudder with a tip at the same angle but vertically displaced, producing a nick in the leading edge.

It won the 1922 Grand Prix de Paris, the only single engine aircraft amongst five competitors, where it was flown by Louis Boussoutrot and his mechanic, Henri Carol.

This contest included a 600 km (370 mi) circuit, which the F.90 completed at an average speed of 144.4 km/h (89.7 mph), and rewarded Farman with FF 80,000 and a statuette.

[1] It appeared in the Zenith Cup, a fuel consumption competition funded by the Société du carburateur Zénith, twice, winning it both times.

On 21–22 July 1923, fitted with its new Salmson CM 9 engines and flown by Boussoutrot, it won with a fuel to load ratio of 0.475, well ahead of the 0.616 of the runner-up, a Potez VIII A two-seater.