Aircraft overview

The PZL-104 Wilga is a Polish four seat utility aircraft developed by WSK PZL Warszawa Okęcie for short takeoff and landing work, liaison flying, glider towing, parachute operations and agricultural or observation duties. The type first flew in 1962, with major production versions following from the mid 1960s and continuing in various forms for several decades. Its importance in the used market comes from its highly specialized STOL design: fixed leading edge slats, large flaps, rugged fixed landing gear and excellent low speed handling for operation from short, rough or improvised strips.

Performance & specifications

Typical figures vary by version, engine and equipment, but the common PZL-104 Wilga 35 and related models cruise at about 90 to 100 knots. Practical range is commonly around 350 nautical miles, depending on fuel fit and reserve policy. Useful load is often in the 800 to 1,000 lb class, with configuration and empty weight making a significant difference. Service ceiling is generally quoted around 13,000 feet. Most widely seen examples use the 260 hp Ivchenko AI-14RA nine cylinder radial engine driving a constant speed propeller. The aircraft is valued less for cruise efficiency than for field performance, climb, visibility and controllability at low speeds.

Cabin & avionics

The cabin normally seats four, with two front seats and a rear bench or mission adapted rear area. Large windows, a high wing and a relatively upright seating position give good outward visibility, useful for observation, glider towing and backcountry flying. Cabin finish is utilitarian, with noise, vibration and ventilation more typical of a working aircraft than a touring single. Avionics are usually conventional analog instruments with VHF radio, transponder and basic navigation equipment. Many aircraft have been updated with modern comms, Mode S or ADS-B equipment, portable or panel mounted GPS units and engine monitoring. Factory integrated suites such as Garmin Perspective or G1000 are not characteristic of the PZL-104 Wilga.

Buying & value

Prospective buyers should focus on airframe condition, corrosion protection, fabric and control surface condition, landing gear attachment areas, engine health, propeller status and documentation quality. The AI-14RA radial is central to ownership planning, so parts access, overhaul history and specialist maintenance knowledge matter. Common market references include the Wilga 35, Wilga 80 and locally modified aircraft, some with western radios, towing equipment, skis, tundra tires or interior changes. Values usually sit in a niche between classic utility aircraft and specialized STOL machines: demand is strongest from buyers who specifically need rough field capability, glider towing performance or distinctive radial powered utility flying rather than fast point to point travel.