What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23) During take-off roll on a sales demonstration flight with the prospective buyer operating the controls, all three of the aircraft landing gears retracted at approximately 60 mph after cresting a small rise in the runway. Mr. Brooksby was the pilot in command and reported that neither pilot had raised the landing gear handle. After the aircraft came to a stop, both pilots exited normally. They then returned to the aircraft and both confirmed that the landing gear handle was still in the down position.
As the FAA filed it
(-23) DURING TAKE-OFF ROLL ON A SALES DEMONSTRATION FLIGHT WITH THE PROSPECTIVE BUYER OPERATING THE CONTROLS, ALL THREE OF THE AIRCRAFT LANDING GEARS RETRACTED AT APPROXIMATELY 60 MPH AFTER CRESTING A SMALL RISE IN THE RUNWAY. MR. BROOKSBY WAS THE PILOT IN COMMAND AND REPORTED THAT NEITHER PILOT HAD RAISED THE LANDING GEAR HANDLE. AFTER THE AIRCRAFT CAME TO A STOP, BOTH PILOTS EXITED NORMALLY. THEY THEN RETURNED TO THE AIRCRAFT AND BOTH CONFIRMED THAT THE LANDING GEAR HANDLE WAS STILL IN THE DOWN POSITION.