What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Pilot landed on runway 7R at kphx and during the roll out of the landing the nose gear retracted resulting in both propellers striking the ground. After the nose of the aircraft contacted the ground, the aircraft traveled on its nose for an additional 500 feet approximately. The aircraft came to rest on the left side of runway 7R in a nose down attitude with the left main landing gear partially retracted as well. The right main landing gear remained fully extended but according to maintenance crews that secured the aircraft before inspectors arrived the right gear down lock was not engaged.
As the FAA filed it
PILOT LANDED ON RUNWAY 7R AT KPHX AND DURING THE ROLL OUT OF THE LANDING THE NOSE GEAR RETRACTED RESULTING IN BOTH PROPELLERS STRIKING THE GROUND. AFTER THE NOSE OF THE AIRCRAFT CONTACTED THE GROUND, THE AIRCRAFT TRAVELED ON ITS NOSE FOR AN ADDITIONAL 500 FEET APPROXIMATELY. THE AIRCRAFT CAME TO REST ON THE LEFT SIDE OF RUNWAY 7R IN A NOSE DOWN ATTITUDE WITH THE LEFT MAIN LANDING GEAR PARTIALLY RETRACTED AS WELL. THE RIGHT MAIN LANDING GEAR REMAINED FULLY EXTENDED BUT ACCORDING TO MAINTENANCE CREWS THAT SECURED THE AIRCRAFT BEFORE INSPECTORS ARRIVED THE RIGHT GEAR DOWN LOCK WAS NOT ENGAGED.