I posted a video about this a while ago, which made several people smile. Saying that this is impossible in reality, piston engines cannot deliver such a high power at such altitude, especially without turbocharging. Later, when I found out that towing is also possible with autopilot and thus can be viewed from the Robin, I made two more videos. Based on these it seems that the skeptics were right, and according to IPACS too, it is not easy to take off and fly from Lukla towed.
Here is the original video.
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