Back of the envelope maths with 1400kg EEW, 7 pax (80kgs each), an hour of fuel (150kg), and 280kg for the external load puts it at 2390kg.
Not sure what altitude it occurred at but here's the HOGE data in case someone else has that info. I'm sure this one's gonna be performance / planning* related.
Glad everyone's OK.
*skills / airmanship
