What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
Narrative: N2 and rotor RPM of aircraft N5418A would not stay in the "green" at cruise power. The no. 1 engine torque would stabilize and would not change when beeped, and the no.2 engine torque would try to compensate. The aircraft was returned to base where it landed safely. Maintenance replaced the governor and fuel control on the no.1 engine. Further investigation revealed fuel contamination caused this incident and the incidents reported inprivacy data omitted
As the FAA filed it
NARRATIVE: N2 AND ROTOR RPM OF AIRCRAFT N5418A WOULD NOT STAY IN THE "GREEN" AT CRUISE POWER. THE NO. 1 ENGINE TORQUE WOULD STABILIZE AND WOULD NOT CHANGE WHEN BEEPED, AND THE NO.2 ENGINE TORQUE WOULD TRY TO COMPENSATE. THE AIRCRAFT WAS RETURNED TO BASE WHERE IT LANDED SAFELY. MAINTENANCE REPLACED THE GOVERNOR AND FUEL CONTROL ON THE NO.1 ENGINE. FURTHER INVESTIGATION REVEALED FUEL CONTAMINATION CAUSED THIS INCIDENT AND THE INCIDENTS REPORTED IN^PRIVACY DATA OMITTED^