In the first season of the Discovery Channel series (2006), he was shown carrying double-amputee Mark Inglis down a portion of the lower descent on his back. In 2007, as a result of urging by expedition leader Russell Brice, Tashi agreed to accompany David Tait on his mission to complete the first double traverse of Everest, climbing the north route to the summit, descending on the south side, resting for three days, and then repeating the trip in reverse. Once at Base Camp on the south side of the mountain, however, Tait decided to bow out of the return traverse. Tait said that his decision was influenced by his belief that Phurba Tashi was a far superior climber and would have allowed him all the glory had they continued. Tait summited Everest for a third time in May 2009, again accompanied by Tashi (his 15th summit).