Not just helicopters, but apparently one or more C-130 aircraft as well.
See BBC news clip
https://www.bbc.co.uk/news/av/world-asia-58393243
So 2 questions along with apology for some thread drift:
Firstly, would the Taliban be able to fly and service a Herc to any realistic extent, assuming the somewhat unlikely scenario that they would find an actual use for it?
Then secondly, why on earth would machinery of that strategic and monetary value have been left behind?