As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW NOTED LH GENERATOR DISENGAGED ON TAKE OF ROLL, ABORTED TAKE OF AND RETURNED TO FBO. MAINTENANCE WAS CONTACTED AND COULD NOT DUPLICATE FAULT ON SUBSEQUENT GROUND RUNS. AIRCRAFT RETURNED TO SERVICE AND HAS NOT HAD THE PROBLEM REPEATED.