What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-23)The pilot did not realize that the landing gear was not extended. Initially the pilot reported that he was not sure if the landing gear collapsed or if he forgot the landing gear. When the aircraft was inspected, the landing gear selector was in the down position. The aircraft was raised off the ground, and when the master switch was turned on, the landing gear extended normally. The landing gear operated normally. Maintenance could not get the landing gear to malfunction. There were marks on the runway that were made by the belly, flaps and prop, which indicated that the airplane landed with the landing gear retracted.
As the FAA filed it
(-23)THE PILOT DID NOT REALIZE THAT THE LANDING GEAR WAS NOT EXTENDED. INITIALLY THE PILOT REPORTED THAT HE WAS NOT SURE IF THE LANDING GEAR COLLAPSED OR IF HE FORGOT THE LANDING GEAR. WHEN THE AIRCRAFT WAS INSPECTED, THE LANDING GEAR SELECTOR WAS IN THE DOWN POSITION. THE AIRCRAFT WAS RAISED OFF THE GROUND, AND WHEN THE MASTER SWITCH WAS TURNED ON, THE LANDING GEAR EXTENDED NORMALLY. THE LANDING GEAR OPERATED NORMALLY. MAINTENANCE COULD NOT GET THE LANDING GEAR TO MALFUNCTION. THERE WERE MARKS ON THE RUNWAY THAT WERE MADE BY THE BELLY, FLAPS AND PROP, WHICH INDICATED THAT THE AIRPLANE LANDED WITH THE LANDING GEAR RETRACTED.