Translations:Help:FAQ:Governor/5/en

Nitro governor - When recovering from an autorotation the throttle increases up to nearly full throttle and stays there

Nitro helicopters react very sluggish during head speed rampup. Especially when the clutch is worn out it can take a lot of time until the rotor gains full head speed while the motor already runs at full speed, trying to spool up the rotor. This will cause the governor to stay at full speed as it detects the desired head speed at a much higher throttle opening than acutally required. So you need to prevent the throttle from opening completely during spool up by decreasing the Governor quick change rate (Parameter menu point K) to a value that represents the maximum speed to which the helicopter is able to ramp up the throttle.