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
7-29
PICTURE OF THE ATTITUDE INDICATOR
Figure 7 - 6
The roll is indicated by displacement from a fixed white index at the top of the instrument. The
displacement indications range left and right between 0
°
and 90
°
with major indexes of 30
°
and
minor indexes of 10
°
between the 0
°
to 30
°
ranges. Roll is also indicated by the relationship
between the airplane-like bar in the foreground and horizon-like display in the background. The
background horizon display is a painted disc with a white horizontal line through the diameter.
The upper portion of the disc is blue to represent the sky, and the lower ground portion is brown.
Pitch is indicated by displacement of the orange airplane-like bar above and below the horizon
line. The center red dot of the airplane bar shows the position of the airplane’s nose relative to
the horizon. The airplane-like bar may be adjusted up and down to get the proper perspective for
different sized pilots by using the knob at the bottom center of the instrument. There are white
lines above the horizon line indexed in increments of 5
°
with a label at the 10
°
and 20º points.
Altimeter
– The backup altimeter is part of the pitot-static system, which is discussed on page 7-
50. The instrument measures the height above sea level and is correctable for variations in local
pressure. The pressure source for the instrument is from the static air vent. An aneroid or
diaphragm within the instrument either expands or contracts from changes in air pressure, and
this movement is transferred, through a series of mechanical linkages, into an altitude reading.
Adjustments for variations in local pressure are accounted for by setting the station pressure
(adjusted to sea level) into the pressure adjustment window, most commonly known as the
Kollsman Window. The altimeter has two Kollsman Windows. The window in the three o’clock
position permits settings in inches of mercury (labeled inches Hg). The one in the nine o’clock
position is calibrated for an equivalent value in millibars (labeled mb). The adjustment knob for
these two windows is at the seven o’clock position on the dial.
Turn Coordinator
– Turn coordinator information is integrated in the Primary Flight Display.
See the Avidyne FlightMax Primary Flight Display discussion on page 7-30.
Vertical Speed Indicator (VSI)
– Vertical speed information is integrated in the Primary Flight
Display. See the Avidyne FlightMax Primary Flight Display discussion on page 7-30.