The LAK-17 is a Lithuanian single-seat sailplane that was designed at the Lithuanian Aero Club ( or LAK), and is manufactured by Sportinė Aviacija.
==Design and development== thumb|right|LAK-17bt fuselage and engine The LAK-17 is designed to meet the requirements of the utility category of JAR-22. It is a single-seat mid-wing sailplane of composite construction with a T-tail and flaps, it has a retractable single-wheel main landing gear and has airbrakes on the upper wing surface. The airfoil is a combination of the LAP92-130/15, at its roots, and the LAP-92-150/15, at its tips. The LAK-17 holds water ballast in tanks in the wing and fin. The LAK-17A was certified in November 1994 by the Lithuanian Civil Aviation Authority. A new variant with an improved wing was designated the LAK-17B. All variants have a wingspan but a wing with span increased to is available as an option; powered self-sustaining versions are also produced.
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