As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) WHILE TOWING AIRCRAFT TO HANGER, THE NOSE LANDING GEAR COLLAPSED AND RETRACTED, CAUSING CONSIDERABLE DAMAAGE TO THE AIRCRAFT. NOSE LANDING GEAR SELECTOR VALVE FAILURE AND PREVIOUS BRAKE SYSTEM PROBLEMS.STRUCTURE REPAIR CARRIED OUT, NOSE LANDING GEAR CHANGED, REPLACED NOSE LANDING GEAR SELECTOR VALVE (P/N 750006000), AND BRAKE CONTROL VALVE. NOSE GEAR OPERATION CHECK CARRIED OUT.