Why an ILS at 80 knots. It's a hangover from the days when a VNE of 90-95 knots was the norm. On every ILS there is at least 6,000 ft. of concrete at the other end so what is there to slow up for.
!20 over 80 equals 2/3rds the drift, windshear effects and most importantly, less time to screw the approach up. I started my ILS career strapped to 70 tons of aluminium and I had far less trouble at 145 than trying to fly it at 80 knots.
If a 737-200 with the same decision height can come out of cloud at minimums, line it up and carry out a crosswind landing whilst staring through two letterboxes why can't a helicopter do the same with wide angle windows and no crosswind problems.
Should this approach have been flown with a target speed of 120 knots this accident would not have happened.