[1] In 1937 a prototype, the VL Pyry I, with the identification number PY-1, was ordered by the Finnish Air Force.

Around 700 pilots were trained in the aircraft and the type accumulated over 56,000 flying hours over a service life of 20 years.

In an attempt to fix the wingtip stall issue, four Pyrys (PY-1, -24, -32 and -37) were equipped with trapezoidal wings, as well as serving to test these structures for the VL Myrsky.

To improve stability, the engine mount was lengthened by 16.5cm in 1944, but it was still a difficult plane to fly for inexperienced pilots.

Data from [6]General characteristics Performance Armament Media related to VL Pyry at Wikimedia Commons