https://www.youtube.com/watch?v=RaO7_xFKRQ0 A Socata MS-893A Rallye Commodore 180 (EC-LVG) tows a Duo Discus (EC-IXA) at La Cerdanya Aerodrome (LECD), on 8/3/15.
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That look more like an ASK-21
Think that’s a G103
Twin Astir, not a Duo Discus