What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
After completion of scheduled maintenance, ground runs, test flights and return to service. PIC departed on a cross country flight to loveland, Colorado. During approach at first scheduled fuel stop helicopter became uncontrollable, PIC managed to land safety. Upon inspection after incident, it was found that the cotter pins where not installed on the right-hand stationary swash plate mixer link resulting on the lower bolt, nut and washer coming off and upper bolt partially coming off.
As the FAA filed it
AFTER COMPLETION OF SCHEDULED MAINTENANCE, GROUND RUNS, TEST FLIGHTS AND RETURN TO SERVICE. PIC DEPARTED ON A CROSS COUNTRY FLIGHT TO LOVELAND, COLORADO. DURING APPROACH AT FIRST SCHEDULED FUEL STOP HELICOPTER BECAME UNCONTROLLABLE, PIC MANAGED TO LAND SAFETY. UPON INSPECTION AFTER INCIDENT, IT WAS FOUND THAT THE COTTER PINS WHERE NOT INSTALLED ON THE RIGHT-HAND STATIONARY SWASH PLATE MIXER LINK RESULTING ON THE LOWER BOLT, NUT AND WASHER COMING OFF AND UPPER BOLT PARTIALLY COMING OFF.