 The reason that the M.F.9 was put in reserve and not scrapped outright was the Sopwith Baby fighters had been scrapped a short time earlier, necessitating the retention of the M.F.9 as a reserve fighter force.Still, by the mid-1930s most of the aircraft were scrapped, the last four being retired in May 1939.The last M.F.9 operational, M.F.9c F.142, was used by the Marinens Flyvebaatfabrikk control officer until 28 May 1937 and then stored at the factory until 6 May 1939 when the Ministry of Defence approved of plans to preserve it as a museum piece.