PZL.37 Łoś in export service
When first flown the PZL.37 Łoś (Moose) was seen as being one of the most advanced bombers in the world, and garnered large international interest. The aircraft was to have been a great sales success for Poland.
An export variant with Gnome-Rhône 14N engines, rather than the Bristol Pegasus used for the Polish aircraft, was designed and test flown for export. In production the aircraft were to be designated PZL.37C or PZL.37D depending on which horsepower model of the Gnome-Rhône 14N engines was to be fitted. The promise of the PZL.37 was however cut short by the German invasion and no export aircraft were built.
The first customer was to have been the Spanish Republic, but their loss in the Spanish Civil War led to the loss of that contract. Some nations had already ordered and paid for their aircraft, while others were still in the negotiation phase when Germany overran Poland.