What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
(-5) The pilot failed to extend the landing gear prior to the jumpers exiting the aircraft as the operator's standard operating proceedures called for. When he reached pattern altitude, during the landing phase the pilot said that he thought that he had already extended the gear. The pilot did not confirm that the landing gear was extended prior to landing, resulting in a gear-up landing. The aircraft sustained minor damage to the fuselage underside, lower antennas and flaps.
As the FAA filed it
(-5) THE PILOT FAILED TO EXTEND THE LANDING GEAR PRIOR TO THE JUMPERS EXITING THE AIRCRAFT AS THE OPERATOR'S STANDARD OPERATING PROCEEDURES CALLED FOR. WHEN HE REACHED PATTERN ALTITUDE, DURING THE LANDING PHASE THE PILOT SAID THAT HE THOUGHT THAT HE HAD ALREADY EXTENDED THE GEAR. THE PILOT DID NOT CONFIRM THAT THE LANDING GEAR WAS EXTENDED PRIOR TO LANDING, RESULTING IN A GEAR-UP LANDING. THE AIRCRAFT SUSTAINED MINOR DAMAGE TO THE FUSELAGE UNDERSIDE, LOWER ANTENNAS AND FLAPS.