The Medwecki and Nowakowski M.N.5 was an economical Polish trainer aircraft initially aimed at the club market, though there was also some military interest.

LOPP, the group that encouraged Polish air-mindedness put out a call for suitable designs, powered by a 60 kW (80 hp) engine, that would be cheap to buy and to run.

[1] The wood-framed M.N.5 was a single bay biplane with stagger and a large interplane gap to ease cockpit access.

[1] The M.N.5 was powered by a 60 kW (80 hp) Armstrong Siddeley Genet five-cylinder radial engine enclosed by a Townend ring.

[1] The M.N.5 had a wide track, divided undercarriage with mainwheels on cranked half-axles hinged from the fuselage underside centreline; a Vickers oleo strut from the stub wing and a radius arm formed a V-strut on each side.

Early testing revealed some stability problems which were overcome by moving the engine forward 300 mm (11.8 in) in a longer nose.

The Department of Aeronautics, looking for a replacement for its Hanriots, was enthusiastic and the construction of a second prototype to speed development was proposed.