https://www.youtube.com/watch?v=37rNaQJtoWU A Grob Twin II (EC-IXA) releases the tow rope from a Socata MS-893A Rallye Commodore 180 (EC-LVG) at La Cerdanya Aerodrome (LECD), on 8/3/15.
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Twin Astir not Duo Discus
Duo Discus ?????