What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: flight originated out of dxr, practiced some holding at oxc at 3500' then did touch and go landings. On 5th approach to rwy 18, performed "gumps", check on downwind and verified "3 green". On final for some "dumb reason that I can't explain, instead of putting in the last notch of flaps, I operated the gear switch and before I realized what I had done, the airplane was on the ground". I had been flying a CE-172 recently where the flap selector switch is on the instrument panel, not a handle between the seats. "I did it out of reflex rather than thought." Admitted doing a gear up a year before in a Cessna.
As the FAA filed it
NARRATIVE: FLIGHT ORIGINATED OUT OF DXR, PRACTICED SOME HOLDING AT OXC AT 3500' THEN DID TOUCH AND GO LANDINGS. ON 5TH APPROACH TO RWY 18, PERFORMED "GUMPS", CHECK ON DOWNWIND AND VERIFIED "3 GREEN". ON FINAL FOR SOME "DUMB REASON THAT I CAN'T EXPLAIN, INSTEAD OF PUTTING IN THE LAST NOTCH OF FLAPS, I OPERATED THE GEAR SWITCH AND BEFORE I REALIZED WHAT I HAD DONE, THE AIRPLANE WAS ON THE GROUND". I HAD BEEN FLYING A CE-172 RECENTLY WHERE THE FLAP SELECTOR SWITCH IS ON THE INSTRUMENT PANEL, NOT A HANDLE BETWEEN THE SEATS. "I DID IT OUT OF REFLEX RATHER THAN THOUGHT." ADMITTED DOING A GEAR UP A YEAR BEFORE IN A CESSNA.