Data recorder, unless it has voice comms/intercoms there is little to learn, we SAW it flying normally into the jet. Be engine punning specs/any Caution lights etc. Nothing to answer the questions.
https://www.msn.com/en-us/news/us/this-wasn-t-a-standard-black-hawk-helicopter-ret-lt-col-darin-gaub/vi-AA1y6JyM?ocid=msedgntp&pc=U531&cvid=58207dc551944c83a9a10fed70e3d3be&ei=10