in a meantime, the factory developed improved model pws-14, featuring a change from wooden to a steel-tube fuselage, strengthened wings and other improvements, like a door in first cockpit's side. the war ministry ordered a production of one pws-14 and a similar modification of the series being in production. it caused some financial problems for the factory, since a production of pws-12s had already started. as a result, the factory delivered in 1932 a series of 20 pws-14, marked officially as pws-12 (military numbers 57.1 - 57.20). a further development of pws-14 was pws-16, and then pws-26.