Peter
I do not have the flight manual for the incident aircraft, however some generic data for you on what is possibly the correct model etc.
BEW with unusable fuel etc 2530lbs
Estimate for 4 x pax 750lbs (and maybe more....its the USA)
Baggae etc as per FAA 271lbs
Fuel 355lbs and maybe more
Adds up to 3906lbs and quite possible to be 4000 to 4030lbs.
MTOW = 3650lbs which for us in Oz is around 160KG overweight.
Hot day too....41 to 42 degrees C
The runway was long enough.....but at that temp and pressure?? and so on it may well have been only just long enough, but 10% overweight and maybe an aft C of G as well. Plus a tail wind component, its not looking good for the pilot!
J