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Let L410 Turbolet

L-410 Turbolet
Transaviabaltika, LY-AVA, Let L-410 UVP-E (28419188591).jpg
Let L-410 UVP-E of Transaviabaltika
Role Airliner, transport aircraft
Manufacturer Let Kunovice
First flight 16 April 1969
Introduction 1970
Status In service
Produced 1971–present
Number built 1,138
Developed into L-410NG

The Let L-410 Turbolet is a twin-engine short-range transport aircraft, manufactured by the Czech aircraft manufacturer LET, mostly used for passenger transport. The aircraft is capable of landing in small and unkempt airports and capable of operating under extreme conditions from +50 °C to -50 °C. Since 1969, more than 1,100 airframes have been produced, which were shipped to Europe, Asia, Africa and South America.

Development of the L-410 was started in the 1960s by the Czechoslovak aircraft manufacturer Let Kunovice. The Soviet airline Aeroflot was looking for a turbine-powered replacement for the Antonov An-2 aircraft, initiating the design development by Let. After preliminary studies of an aircraft called the L-400, a new version was introduced called the L-410 Turbolet. The first prototype, designated XL-410, flew on April 16, 1969. Because of delays in the development of a suitable Czech engine (Walter M601), the prototype and first production version were powered by Pratt & Whitney Canada PT6A-27 engines.

After M601 development was completed, the PT6 engine was replaced by M601 engines coupled with Avia V508 three-blade propellers and the next variant was introduced, the L-410M.

A further version for Aeroflot was the L-410 UVP. This has improved performance in take-off and landing due to increased wing and tail area - STOL. However, due to an increased empty weight and a shift in the center of gravity, the aircraft had a decreased seating capacity: 15 passengers.

The L-410UVP-E (the most common variant of the L-410) has increased maximum take-off weight to 6400 kg, M601E engines with increased power, new five-blade propellers designated V 510 and the provision for wing tip tanks to increase fuel quantity. First flight was made in 1984, and production started in 1986.

The L-410UVP-E9 and UVP-E20 are versions which vary from each other only by minor changes arising from various certification regulations. The last L-410 family member is the L-420 which uses the new Walter engine variant, the M601F. Currently produced L 410 UVP-E20's are powered by next derivative of M601 engine designated as GE H80-200 and new Avia Propeller AV-725 five blade propellers.


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