Section 7
Columbia 400 (LC41-550FG)
Description of the Airplane and Systems
Initial Issue of Manual: November 10, 2004
RC050002
Latest Revision Level/Date: -/11-10-2004
7-25
Turbine Inlet Temperature (TIT) –
The TIT
gauge is in the engine instrument panel in the
bottom-right position. The instrument is a dual presentation gauge with the turbine inlet
temperature (TIT) gauge on the left and CHT readings on the right. The graduations are in
increments of 100
°
F. A green arc extends from 1000
°
F to 1650
°
F. A yellow arc extends from
1650
°
F to 1750
°
F. There is a red radial at 1750
°
F.
The primary use of the TIT is for proper mixture control since the indications reflect combustion
efficiency. Compared to CHT, the measurement is more direct and mixture adjustments are
reflected almost immediately. (Please see the discussion on page 4-29 for proper mixture leaning
techniques.) The right side TIT is displayed on the analog TIT gauge. The left side TIT is
displayed on the Entegra MFD and may indicate up to 50° F hotter than the right due to the
wastegate. When leaning using the TIT gauges, the hottest indication should be used.
FLIGHT INSTRUMENT PANEL
All flight and navigational instruments are installed in this particular area. In addition, there is an
annunciator array located on the left side of the flight instrument panel. The PFD is directly in
front of the pilot and the attitude, airspeed, and altitude indicators in a column next to the PFD.
Directly below the annunciator panel is an acknowledge button for the aural warning system.
The discussion that follows will identify each instrument. A drawing of the airplane cockpit is
shown on page 7-12.
Annunciator Panel
– The presentation of the annunciator panel is shown in Figure 7 - 5. The
number below each label identifies the page number that contains the relative discussion.
Controlling light intensity and testing these lights is discussed in this section on page 7-64.
1. If the
DOOR OPEN
light is on, one or more of the airplane’s doors is not properly secured.
2. If the
FUEL VALVE
light is on, the fuel selector is not set to either the left or right tank, or
is not properly seated in the detent of the selected tank.
3. If the
L BUS OFF
or
R BUS OFF
light is on, the electrical bus is either not turned on or is
damaged.
4. If the
L
ALT OFF
or
R ALT OFF
light is on, then either the alternator is not turned on, the
alternator was tripped off-line by an over voltage condition, or low voltage conditions exist.
In either case, the corresponding battery is in a state of discharge.
5. If the
OIL PRESS
light is on, the engine oil pressure is less than 5 psi.
6. If the
FUEL PUMP
light is on, the engine driven fuel pump has malfunctioned and the fuel
pressure is less than about 5.5 psi.
7. If either the
L LOW FUEL
or
R LOW FUEL
light is on, the indicated tank has less than
eight gallons of usable fuel remaining in that tank.
8. If the
SPEED BRAKES
light is on, the speedbrakes are deployed. When deploying the
speedbrakes, the annunciator stays off until they are full deployed. When retracting the
speedbrakes, the annunciator stays on until fully retracted.
9. The
STARTER ENGAGED
light is on when the starter is activated.
10. If the
OXY
light is on, the system has not been activated above approximately 12,000 ft PA,
there is inadequate quantity of oxygen, or the oxygen outlet pressure is not within range for
proper operation.
11. If the
CARBON MONOXIDE
light is on the carbon monoxide level has reached 50 parts
per million by volume or greater.