Maximum Reverse PROP RPM
1825 RPM
Maximum Transient PROP RPM
2090 RPM for 20 Seconds
Maximum Rated PROP RPM
1900 RPM
Overspeed Governor Test
1750 +/- 60 RPM
EX Propeller
Hartzel Composite
Legacy Propeller
McCaulley Metal
Primary Governor
Uses oil pressure, springs and fly weights. Oil pressure takes propeller to Low Pitch/High RPM. Springs take propeller to feather. With loss of oil pressure propeller feathers
Overspeed Governor
Prevents propeller runaway, not connected to propeller lever
Fuel Topping Governor
Controls fuel flow from the FCU to maintain 2090RPM or what RPM the Overspeed Governor failed at