Using 3top’s scenario and based on a machine I know, which has a basic weight 1988 lbs, I would estimate that the stricken machine had a weight of 2917 lbs. (I have used less fuel than 407 driver reckoning 18 US gallons would meet the ‘45 minutes including reserve’).
From the RFM I calculate the max weight for an OGE hover in the vicinity of the LZ would be 2650 lbs for an aircraft without a particle separator and 2620 lbs for one with a particle separator.
So I would concur that the machine would probably be 250 to 300 lbs overweight.
If a ‘hard landing’ was the result then they may wish to regard themselves as lucky. The last case I was involved with that had a similar scenario the engine topped out, and the helicopter suffered rotor rpm decay, loss of directional control and caused multiple fatalities.