What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
During cruise flight, PIC thought he was reducing propeller RPM when he was actually leaning the mixture. After a period of time the engine began running rough. The PIC referred to the checklist and then elected to make an off airport emergency landing 18 miles se of Zuni, new Mexico. PIC and one passneger were not injured. The aircraft received no damage.
As the FAA filed it
DURING CRUISE FLIGHT, PIC THOUGHT HE WAS REDUCING PROPELLER RPM WHEN HE WAS ACTUALLY LEANING THE MIXTURE. AFTER A PERIOD OF TIME THE ENGINE BEGAN RUNNING ROUGH. THE PIC REFERRED TO THE CHECKLIST AND THEN ELECTED TO MAKE AN OFF AIRPORT EMERGENCY LANDING 18 MILES SE OF ZUNI, NEW MEXICO. PIC AND ONE PASSNEGER WERE NOT INJURED. THE AIRCRAFT RECEIVED NO DAMAGE.