The following parameters are monitored:
• Coolant temperature
• Oil pressure
• Engine speed
• Atmospheric pressure (Barometric pressure)
The coolant temperature, oil pressure, and the
engine speed can trigger an engine shutdown.
• Atmospheric pressure (Barometric pressure) can
trigger an engine de-rate.
The atmospheric pressure sensor (Barometric
pressure sensor) can de-rate the engine. Operating
the engine and increasing the altitude will de-rate the
engine in accordance with emission regulations. The
start of the de-rate will be determined by the flash file
that is installed.
i06946627
Overspeed
• 402F-05 3600 Revolutions Per Minute
(RPM)
• 403F-07 3600 RPM
• 403F-11 3600 RPM
• 403F-15 3000 RPM
The overspeed is plus 700 RPM above the given
speed for engines shown.
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Sensors and Electrical
Components
The following sensors or switches are installed on the
402F-05, 403F-07, 403F-11, and the 403F-15
engines:
• Oil pressure switch
• Coolant temperature sensor
• Atmospheric pressure sensor (Barometric
pressure sensor)
• Speed sensor
• Throttle actuator
SEBU9064-08
33
Operation Section
Overspeed
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