What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Instructor and student had been out on a training flight and were headed back to the flight school home base. As they entered the airport traffic pattern, they became distracted by strong winds. Due to this distraction, they neglected to lower the landing gear as part of the pre-landing checklist. They also neglected to double check "gear down" status on final approach to the runway. A "gear up" landing resulted. The student in this case was not yet rated in the aircraft, thus the instructor was pilot-in-command.
As the FAA filed it
INSTRUCTOR AND STUDENT HAD BEEN OUT ON A TRAINING FLIGHT AND WERE HEADED BACK TO THE FLIGHT SCHOOL HOME BASE. AS THEY ENTERED THE AIRPORT TRAFFIC PATTERN, THEY BECAME DISTRACTED BY STRONG WINDS. DUE TO THIS DISTRACTION, THEY NEGLECTED TO LOWER THE LANDING GEAR AS PART OF THE PRE-LANDING CHECKLIST. THEY ALSO NEGLECTED TO DOUBLE CHECK "GEAR DOWN" STATUS ON FINAL APPROACH TO THE RUNWAY. A "GEAR UP" LANDING RESULTED. THE STUDENT IN THIS CASE WAS NOT YET RATED IN THE AIRCRAFT, THUS THE INSTRUCTOR WAS PILOT-IN-COMMAND.