Upgraded version PF was powered by turbojets Tumanski R-11 F2S-300 or R-11 F2SK-300 (38,24 kN) w/afterburning 61,75 kN. New armament was gunpod GP-9 with two barrel cannon GSh-23 under fuselage, new tail, new 7. fuel bag outside cockpit canopy. For Czechoslowak airforce was installed SPS system ( flap blowing system to improve airfield performance) for short field operations. Plane PFM-SPS had new cockpit and new ejection seat KM-1.

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BIL-934RETAIL PRICE: $19.95SALE PRICE: $14.95