As a 1938 development of the FN305, there were also 25 F.N.315 intermediate trainers with the 172-kW (230-hp) Hirth HM 508D inline, a revised canopy, a new tail unit, flaps and increased dihedral on the outer wing panels.
The F.N.315 was also produced with the Alfa Romeo 115-1 of 185 hp.
The F.N.315 was exported to six countries, and a light-attack version was flown experimentally.
Engine: Hirth HM 508, 172 kW (230 hp).
Wingspan: 27 ft 9 in
Wing area: 129.12 sq.ft
Length: 22 ft 11 in
Height: 6 ft 10.5 in
Empty weight: 1562 lb
Loaded weight: 2255 lb
Max speed: 239 mph at 8200 ft
Cruise: 220 mph at 11,480 ft
Time to 13,120ft: 6 min 40 sec
Cruise range: 590 mi
All Aero 