Section 7
Columbia 400 (LC41-550FG)
Description of the Airplane and Systems
Initial Issue of Manual: November 10, 2004
RC050002
Latest Revision Level/Date: A/12-01-2004
7-105
Engine Instruments – Engine Page
The MFD can provide an Engine page (see Figure 7 - 34), which is accessed by turning the left
knob all the way to the right. This page is used to display the health and performance status of
the aircraft engine. Most of the engine indications are transmitted to the MFD via a remotely
mounted data acquisition unit (DAU) while the remainder are calculated by the EX5000.
The Engine page is divided into four main sections plus an OAT gauge:
1.
Gauges
– Provides analog and digital readouts of manifold pressure, RPM, percent power,
oil temperature, oil pressure, and fuel flow.
2.
Electrical
– Monitors the electrical buses and alternator output currents.
3.
OAT
–
Monitors the outside air temperature (OAT).
4.
Fuel
– Provides fuel used, fuel remaining, time remaining, and fuel economy.
5.
Cylinder Temperatures
– Full display of exhaust gas temperature (EGT) and cylinder head
temperature (CHT) for all six cylinders, as well as turbine inlet temperature (TIT) for the left
turbocharger.
Engine Instrument’s Cautions and Warnings –
In order to assist the pilot in monitoring
engine health, the MFD will highlight any engine parameters that are not within normal
operating conditions. “Caution Zone” readings will cause the appropriate annunciation to turn
yellow while “Warning Zone” readings will cause a red indication. Figure 7 - 34 shows the
following items:
1.
Gauges
a.
Manifold Pressure
–
Displays current engine power in inches of Hg as measured at the
engine’s induction system and reported by the DAU.
b.
RPM
–
Displays current engine speed in revolutions per minute as reported by the DAU.
c.
% Power
–
Indicates the current percent power being made by the engine. This
indication is calculated by the MFD based on engine RPM, manifold pressure, outside air
temperature, and pressure altitude.
NOTE
Percent Power loses accuracy below 40% and will not be displayed at lower
settings.
d.
Oil Temp
–
Displays the current engine oil temperature in degrees Fahrenheit as reported
by the DAU.
e.
Oil Pressure
–
Displays the current engine oil pressure in pounds per square inch (psi) as
reported by the DAU.
f.
Fuel Flow
–
Displays the current engine fuel consumption as a fuel flow in gallons per
hour (GPH) as reported by the DAU.
2.
Electrical
a.
Left/Right Bus
–
Indicates the current voltage of the left and right buses in volts as
reported by the DAU.
b.
Left/Right Alt Amps
–
Indicates the amount of current in amps being produced by the
left and right alternators as reported by the DAU.
3.
Outside Air Temperature (OAT)
–
Indicates the ambient air temperature as reported by
the PFD. This will either be displayed in degrees Fahrenheit or degrees Celsius as selected
by the pilot using the temperature unit control.