 The main difference between the M.F.8 and the M.F.7 were that M.F.8 had a new tail rudder and wing profile, in order to increase landing speed.The new profile had been developed by the Swedish professor Nordensvan, in cooperation with the Norwegian Army Air Service.The first building of the two first aircraft began in December 1923, F.6 (III) being finished 30 May 1924 and F.12 in August the same year.