hi all
FF 1 Two-seat single-float biplane (11.1912)
FF 2 Single-seat two-float monoplane (1913)
FF 4 Two-seat two-float monoplane (02.1914)
FF 8 Single-seat two-float sport monoplane (06.1913)
FF 9 Two-seat single-float racing biplane (06.1913)
FF 11 Two-seat reconnaissance biplane flying boat (02.1914)
FF 15 Two-seat single-float biplane (1914)
FF 17 Two-seat two-float biplane (05.1914)
FF 19 Two-seat two-float reconnaissance biplane (04.1914)
FF 21 Single-engine flying-boat (07.1914)
FF 27 Two-seat single-float reconnaissance biplane (07.1914)
FF 29 Two-seat two-float reconnaissance biplane (11.1914)
FF 31 Two-seat two-float reconnaissance biplane (12.04.1915)
FF 33 Two-seat two-float reconnaissance biplane (11.1914)
FF 34 Experimental two-float biplane (1916)
FF 35 Three-seat twin-engined two-float torpedo biplane (1916)
G.I (FF 36) Three-seat twin-engined bomber biplane (1915)
FF 37 Land version of FF 31
G.II (FF 38) Three-seat twin-engined bomber biplane (07.1916)
FF 39 Two-seat two-float reconnaissance biplane
FF 40 Three-seat two-float reconnaissance biplane (04.1916)
FF 41 Two-seat twin-engined two-float torpedo biplane (02.1916)
FF 43 Single-seat two-float fighter biplane (08.09.1916)
FF 44 Two-seat two-float experimental biplane (04.1917)
G.III (FF 45) Three-seat twin-engined bomber biplane (17.04.1917)
D.I (FF 46) Single-seat fighter biplane (1917)
FF 48 Two-seat two-float reconnaissance biplane (22.08.1917)
FF 49 Two-seat two-float reconnaissance biplane
FF 53 Two-seat twin-engined two-float biplane
D.III (FF 54) Experimental single-seat fighter (1917)
G.V (FF 55) Two-seat twin-engined experimental bomber biplane (09.05.1918)
FF 59 Two-seat two-float reconnaissance biplane (20.02.1918)
FF 60 Two-seat four-engined two-float reconnaissance triplane (11.1918)
G.IV (FF.61) Three-seat twin-engined bomber biplane (1918)
FF 62 Two-seat twin-engined bomber biplane (20.11.1918)
FF 63 Two-seat two-float monoplane (13.08.1918)
FF 64 Two-seat two-float reconnaissance biplane (05.05.1918)
FF 66 project only
FF 67 Twin-float biplane (12.12.1918)
FF 71 Two-seat twin-float biplane (04.1919)
G.VI (FF ??) Twin-engined bomber biplane. Project only
N.I (FF ??) Two-seat night bomber biplane (1917)
FF 1 Two-seat single-float biplane (11.1912)
FF 2 Single-seat two-float monoplane (1913)
FF 4 Two-seat two-float monoplane (02.1914)
FF 8 Single-seat two-float sport monoplane (06.1913)
FF 9 Two-seat single-float racing biplane (06.1913)
FF 11 Two-seat reconnaissance biplane flying boat (02.1914)
FF 15 Two-seat single-float biplane (1914)
FF 17 Two-seat two-float biplane (05.1914)
FF 19 Two-seat two-float reconnaissance biplane (04.1914)
FF 21 Single-engine flying-boat (07.1914)
FF 27 Two-seat single-float reconnaissance biplane (07.1914)
FF 29 Two-seat two-float reconnaissance biplane (11.1914)
FF 31 Two-seat two-float reconnaissance biplane (12.04.1915)
FF 33 Two-seat two-float reconnaissance biplane (11.1914)
FF 34 Experimental two-float biplane (1916)
FF 35 Three-seat twin-engined two-float torpedo biplane (1916)
G.I (FF 36) Three-seat twin-engined bomber biplane (1915)
FF 37 Land version of FF 31
G.II (FF 38) Three-seat twin-engined bomber biplane (07.1916)
FF 39 Two-seat two-float reconnaissance biplane
FF 40 Three-seat two-float reconnaissance biplane (04.1916)
FF 41 Two-seat twin-engined two-float torpedo biplane (02.1916)
FF 43 Single-seat two-float fighter biplane (08.09.1916)
FF 44 Two-seat two-float experimental biplane (04.1917)
G.III (FF 45) Three-seat twin-engined bomber biplane (17.04.1917)
D.I (FF 46) Single-seat fighter biplane (1917)
FF 48 Two-seat two-float reconnaissance biplane (22.08.1917)
FF 49 Two-seat two-float reconnaissance biplane
FF 53 Two-seat twin-engined two-float biplane
D.III (FF 54) Experimental single-seat fighter (1917)
G.V (FF 55) Two-seat twin-engined experimental bomber biplane (09.05.1918)
FF 59 Two-seat two-float reconnaissance biplane (20.02.1918)
FF 60 Two-seat four-engined two-float reconnaissance triplane (11.1918)
G.IV (FF.61) Three-seat twin-engined bomber biplane (1918)
FF 62 Two-seat twin-engined bomber biplane (20.11.1918)
FF 63 Two-seat two-float monoplane (13.08.1918)
FF 64 Two-seat two-float reconnaissance biplane (05.05.1918)
FF 66 project only
FF 67 Twin-float biplane (12.12.1918)
FF 71 Two-seat twin-float biplane (04.1919)
G.VI (FF ??) Twin-engined bomber biplane. Project only
N.I (FF ??) Two-seat night bomber biplane (1917)