Kathryn Report has some details: http://www.kathrynsreport.com/2018/0...56p-fatal.html
Some highlights:
- There was an ATP/part-time CFI onboard that had amassed 4500 hrs.
- " Highly placed aviation sources with intimate knowledge of the investigation say the leading theory is that the aircraft was overweight and simply lost lift during takeoff."
- The plane seemed to rise just feet off the runway, not gaining any altitude. It alarmed the person in the tower to the point where she radioed the pilot, asking if there was trouble:
Tower: "Comanche 5 6 ... experiencing any difficulty?"
Pilot: "Ah, we're good.. we're just in training mode."
Moments later, the plane crashed.
I also found a POH and W&B of a 260 online and that planes particular useful load was 1284lb and the max weight in the back seats was 235lbs. The Comanche has a 60 gallon fuel capacity with an option for 30 gallons more. Assuming 60 gallons of fuel leaves only 924lbs of room for 6 adults plus luggage.