PZL-106 Kruk (prototyp)

Particular attention was paid to pilot safety. The cockpit is a separate integral unit, attached to the fuselage framework. Behind the pilot’s cockpit there is a separate compartment for a mechanic, used during repositioning flights. The cockpit is sealed, pressurised, and the incoming air is filtered. To prevent the consequences of collisions with power lines, wire cutters are mounted on the main landing gear and in front of the pilot’s cockpit, and a deflection cable is stretched from the top of the cockpit to the tip of the vertical stabilizer. Below the cockpit there is a cargo bay where agricultural equipment is secured on appropriate mounts during longer repositioning flights. The wing in version A has two spars. The wing box is covered with sheet metal, while the trailing section is fabric-covered. A fixed slot runs along the entire wingspan.

The main component of the agricultural equipment is the chemical tank. It is made of epoxy laminate reinforced with glass fibre. It is located in the fuselage framework between the engine and the pilot’s cockpit. In the upper part, the tank has a filling opening for dry chemicals, closed by a pneumatically operated flap controlled from the pilot’s cockpit. In the lower part of the tank there is an outlet fitted with locks for mounting various versions of suspended equipment. The dry fertilizer equipment consists of a metering device attached to the tank and a tunnel spreader suspended from fuselage fittings. The liquid equipment comprises a pumping-filtering unit, an under-fuselage pipe for filling the tank with working fluid, and spray bars with 90 nozzle fittings for mounting shut-off valves with interchangeable spray nozzles. The bars are suspended on booms behind the wing.