The Sparrow S-10 (the first one you get) isn't obtainable by players who already have 3 characters amd have passed "The Warmind" mission.
If it wasn't in your inventory when 2.0 hit, it isn't in the Sparrow kiosk.
The description states "Obtained from "the Warmind" Mission", however if you already have a sparrow it skips the objective that gives the S-10. Deleting your sparrow via bungie.net/dismantling glitch doesn't work either.
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Would it be pssible to have a friend create a new character... start the mission.. but before deploying the ghost to get the sparrow we join?