The Aerotechnik L-13 Vivat is a metal two-seater motorglider built in series from 1975 to 1999 in the Czech Republic . Designed by Karel Dlouhy, it is a side-by-side two-seater using the wings (without the flaps but with the airbrakes), the empennages and the rear part of the fuselage of the famous LET L 13 Blanik glider . The central and forward parts of the fuselage have been modified to accommodate a side-by-side cockpit covered with a one-piece molded canopy rising towards the rear and a 60 hp Walter Mikron IIIAE engine driving on the prototype a propeller in Hoffman fixed pitch wood. The aircraft is based on a single-track undercarriage (a retractable fork in the fuselage and a fixed rear castor) and roller topping lifts at the wingtip that rise under the salmon in flight. The first mass-produced version in 1975 ( L-13SW Vivat, later renamed L-13SEH ) gave rise to several versions, details of which can be found below. Around 200 examples were built, with more than 150 exported worldwide. Evektor ceased production of this aircraft in 1999 to concentrate on manufacturing Eurostar two-seaters . Variants L-13SE Vivat: Only model fitted with flaps, Mikron IIIAE engine. L-13 SEH Vivat: Standard model (ex L-13SW ) with Mikron IIIAE engine driving a three-position Hoffman propeller. L-13SL Vivat: Standard model with 67 hp Limbach L200E01 engine driving a constant speed Muhlbauer propeller. L-13SDLiva Vivat: Version of the previous one equipped with a classic fixed main landing gear, with removal of the topping lifts. L-13SDM Vivat: Model with Mikron IIIAE engine equipped with a conventional fixed main gear.