As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT TAXIED TO RUNWAY AFTER LOADING CARGO. AFTER NORMAL RUNUP, THE PILOT TAXIED ONTO THE RUNWAY AND STOPPED. THE PILOT ADVANCED THROTTLES AND RELEASED BRAKES, AFTER RELEASING BRAKE, THE NOSE GEAR COLLAPSED. AIRCRAFT WAS RECOVERED AND TOWED OFF RUNWAY TO A SAFE TIE DOWN SPOT. NO CAUSE IS YET KNOWN AS TO WHY THE NOSE GEAR COLLAPSED. (K)