Of course the usual speculation from 'eye witness' such as tail rotor failing or engine failure. Of course this was a night departure with all the usual risks that helicopter crews face on such departures, plus in this case departing from a flood lit area, into the dark with twenty four 'pylons' (probably unlit) on top of the stadium structure.
Last edited by anchorhold; 27th Oct 2018 at 22:49.