Development and Design Philosophy
The SMG-92 Turbo Finist emerged from designer Slava Kondratiev's vision at Technoavia to create a versatile utility aircraft optimized for challenging operational environments. Kondratiev, who had previously contributed to the design of aerobatic aircraft including the Yak-55 and Sukhoi Su-26/29/31 series, focused on developing a robust platform certified to FAR 23 and JAR 23 standards. The turboprop variant built upon the foundation of the original SM-92 Finist, which had first flown on December 28, 1993, as a radial-engine powered aircraft.
Manufacturing Partnership
Production represented an unusual international collaboration between Russian and Slovak aerospace companies. Smolensk Aircraft Factory (SmAZ) in Russia handled airframe construction and initial prototypes, while Aerotech Slovakia AS in Bratislava performed the critical engine installations, cowling modifications, and turboprop conversions beginning in 2000. This partnership reflected the post-Soviet aviation industry's adaptation to new market realities and international cooperation.
The production history proved complex, with approximately 15 SM-92 Finist airframes built at Smolensk before manufacturing suspended, including 5 development aircraft and 10 production examples. At least 4 SMG-92 Turbo Finist conversions were completed by February 2003, excluding the prototype. Later production involved Czech companies, with examples like construction number 02-003 (registration HA-YDM) built in 2009 and construction number 03-004 (OK-PRA) associated with Orbis Avia and Praga marketing efforts.
Engine and Performance
The heart of the SMG-92 Turbo Finist was the Walter M601D-2 turboprop engine, producing 400 kilowatts (536 shaft horsepower). This reverse-flow free-turbine design, manufactured by Walter Avia, drove an Avia V-508D-2 three-blade fully feathering reversible-pitch propeller. The M601 series had proven reliable in utility roles since the 1960s, powering aircraft like the Let L-410 and L-610 series.
The turboprop installation transformed the aircraft's operational capabilities compared to the original M-14P radial piston engine. Prototype testing also evaluated alternative powerplants including the Pratt & Whitney PT6 and an experimental Orenda OE600 V-8 diesel engine on one Z-410 Rhino variant.
Operational Characteristics
The SMG-92 Turbo Finist excelled in short-field operations with a stall speed of just 54 knots with flaps extended. Takeoff performance included a ground roll of 250 meters and distance to clear a 15-meter obstacle of 457 meters. Landing performance proved even more impressive, with a standard landing roll of 280 meters reduced to just 145 meters when using propeller reversal.
Climb performance reached 4,000 meters in 11 minutes, with a maximum operational altitude of 5,940 meters. Descent from 4,000 meters required only 5 minutes and 30 seconds. Maximum range on internal fuel reached 324 nautical miles (600 kilometers), though this could be extended with auxiliary tanks for ferry flights.
Service Applications
The aircraft found its primary niche in specialized utility operations, particularly parachute dropping and short-field transport work. Early operators included UK-based companies, with the first production SM-92 Finist (registration RA-44485) delivered in 1995. Subsequent SMG-92 Turbo Finist examples served with Wingglider Ltd in the United Kingdom from January 2001 and Skydive Center Bad Saulgau in Germany from June 2001.
A notable demonstration flight occurred in August 1995 when SM-92 Finist registration RA-44484 completed a round-the-world tour covering 30,000 kilometers in 160 flight hours, showcasing the type's reliability and range capabilities. The aircraft was exhibited at Aero '01 Friedrichshafen in April 2001, highlighting its commercial potential in the European market.
Military Variant Development
Technoavia developed a military variant designated SM-92P, featuring rocket launchers and three machine gun positions—two mounted on the lower fuselage and one positioned in the doorway for defensive purposes. However, no operational military deployments or combat service have been recorded, as the design emerged in the post-Cold War era focused primarily on civilian utility roles.
Production Legacy and Current Status
Total production across the entire Finist family reached approximately 30 aircraft, including various licensed builds and conversions. The original Smolensk production line ceased operations, but licensing agreements extended manufacturing to Czech companies including Zlin (which produced the Z-400 Rhino variant) and later Orbis Avia with their Silver Fox and Praga Alpha derivatives.
As of 2017, at least 4 to 6 SMG-92 Turbo Finist aircraft remained active, with examples like HA-YDM operating from Pardubice (LKPD) in 2011 and OK-PRA based at Hradec Králové (LKHK) in 2017. Neither the original Technoavia design bureau nor Smolensk Aircraft Factory continues operations under their original names, though Czech variants like the Praga SM-92TE maintain the design lineage in limited production.