It always amazes me that after 1 year of investigating the AAIB can't even get the important facts correct
The max gross weight is 1600 kg as the plate in the front of the helicopter shows ,more importantly because they make comment to their interpretation of the aircraft being over weight, using the correct figure the aircraft would have been nearer to gross weight and at 2kg over weight [their estimate } more that would that have been used on start up before flight
Fr0m AAIB report
copy of plate in helicopter and from manual for 313B
https://www.dropbox.com/s/rhu0o0zc89..._3613.JPG?dl=0
https://www.dropbox.com/s/bfcoq7j9ul..._3612.PNG?dl=0