finding it comparable to the native Polikarpov R-5. Altogether, approximately 2,500 aircraft were built in France. Already in 1925, Poland bought a licence for Potez 25 and started to manufacture them in Podlaska Wytwórnia Samolotów (PWS, 150 built) and Plage i Laśkiewicz aircraft works (150 built). In 1928 the first Polish-built Potez 25 were tested by the Technical Aviation Development Institute in Warsaw and the design was slightly modified to better fit the needs of the Polish air forces. Among the notable differences were the introduction of leading edge slots. The production in Poland ceased in 1932. Altogether, 300 aircraft were built in a number of versions for long- and short-range reconnaissance and daylight tactical bombing. As the original Lorraine-Dietrich 12Eb engine was unavailable in Poland, it was replaced in 47 aircraft with a more powerful PZL Bristol Jupiter VIIF radial engine, starting from 1936. In Romania, Potez 25 was produced by IAR. Several other countries manufactured Potez 25s under licence. Variants Potez 25One prototype aircraft, powered by a Hispano-Suiza 12Ga W-12 engine. Potez 25 A.2 Two-seat observation version, powered by a Salmson 18Cmb or Lorraine 12Eb engine. Potez 25.5 Production version, powered by a Renault 12Jb, 100 built. Potez 25.8 A reconnaissance-bomber powered by a single Farman 12Wc W-12 engine, several dozen of which were built. Potez 25.12 Reconnaissance aircraft, approximately 280 built, powered by Salmson 18Cmb 18 cyl. 9-bank in-line radial engines, (9 pairs of cylinders one behind the other, not staggered). Potez 25.23 A single P-25.12, (n°71), modified for a tour of europe from 14 to 22 September 1928. Potez 25.35 Two-seat target-tug version. Potez 25.36 Two-seat monoplane version Potez 25.44 A reconnaissance-bomber powered by a single Renault 12Jb V-12 engine, 74 of which were built. Potez 25.47 A single liaison two-seater built especially for the Ministère de l'Air powered by a Hispano-Suiza 12Lb V-12 engine. Potez 25.55 Two-seat training version. 40 built. Potez 25 ET.2 Two-seat intermediate training version, powered by a Salmson 18Ab radial engine. Potez 25 Farman Two-seat observation version for the French Air Force, powered by a Farman 12We. Also known as the Potez 25/4. 12 built. Potez 25GR Long-range version, powered by Lorraine 12Eb W-12 engines. Potez 25 'Jupiter' Export version, powered by a Gnome-Rhône 9Ac Jupiter radial. Built under licence by Ikarbus in Yugoslavia and OSGA in Portugal, exported to Estonia and Switzerland. Potez 25H Two floatplane prototypes, each one was