LAK-17A. SAILPLANE FLIGHT MANUAL. 0. Issue No.2. Author. Date: 2004 04 05 For optimum performance the aircraft should be flown with a C.G. position. Jul 5, 2005 - Jump to Specifications (LAK-17A with 15 metre wingspan) - LAK-17B. Flight Manual. Page i. 0.1 Record of revisions. Any revision of the performance sailplane of FAI 15m - 18m class LAK-17A designed according to. Nov 11, 2010 - Feb 21, 2014 - Jul 5, 2019 - Nov 17, 2014 -May 9, 2009 - Performance of the LAK17 was equal or better than anything flying in the contest. Dick Johnson's LAK-17A flight evaluation in progress. Draft 10 setting; however the cockpit flap setting plate in our test sailplane did not include that notch.