Extra EA 400 - Engine Controls and Instruments

Section 1 Pilot’s Operating Handbook
General EXTRA 500
1.5.d Engine Controls and Instruments
Power Control
Lever
The power control lever allows thrust modulation from Takeof
f
(full forward position) to Maximum Reverse (aft position).
Specific positions on the lever are:
Max Power, Flight Idle, Ground Idle and Max Reverse.
A “pull to retard” feature will prevent inadvertent leve
r
movement below the flight idle setting when in flight.
Condition lever The condition lever allows engine starting and shutdown,
p
ropeller feathering and fuel shutoff, and the capability to var
y
the propeller speed between 93.6 and 100 %. Specific positions
are: 100 % Propeller Speed (full forward position), Minimu
m
Propeller Speed setting, and Fuel Shutoff and Propeller
Feathering (aft position). A “pull to retard” feature will preven
t
inadvertent lever movement below the minimum propelle
r
speed setting when in flight.
Turbine Outlet
Temperature
(TOT) Gauge
The turbine outlet temperature indicator is the instrument used
to show the temperature of the gases leaving the 2nd wheel of
the gas producer turbine rotor (°C).
Torque Gauge The torque indicator is the instrument used to identify the
propeller shaft torque. The sensed engine torquemeter oil
p
ressure is converted into an indication of torque output,
expressed in terms of percent (%).
Oil Pressure
Gauge
The oil pressure indicator is the instrument used to show the
p
ressure (PSI) of the engine oil delivered to the gearbox
housing “header”
p
assage (downstream the pressure pump,
internal oil filter and oil pressure regulating valve)
Oil Temperature
Gauge
The oil temperature indicator is the instrument used to show the
temperature (°C) of the engine oil delivered to the engine oil
inlet port at the accessory gearbox.
Gas Producer
Speed (N1)
Gauge
The gas producer speed indicator is the instrument used to
identify the rotational speed of the engine gas producer turbine
rotor. The gas producer speed is sensed via the gas produce
r
gear train by a tach-generator and converted into an indication
of RPM output, expressed in terms of percent (%).
1-16 26. January 2011