Section 3
Columbia 400 (LC41-550FG)
Emergency Procedures
Initial Issue of Manual: November 10, 2004
RC050002
Latest Revision Level/Date: -/11-10-2004
3-33
Loss of air data (altitude, airspeed) is indicated by the affected indicator being removed from the
display and replaced with a red X. Loss of attitude data (pitch, roll, heading) is indicated by the
affected indicator being removed from the display and replaced with a red X.
CAUTION
Any power interruption to the PFD will result in loss of attitude information
from the PFD until the unit can be restarted on the ground. (The PFD does
have limited calibration capabilities. See discussion on page 7-49.)
It should be noted that since the autopilot uses the gyro of the electric turn coordinator, which is
mounted in the avionics compartment for roll information and has a dedicated pressure
transducer and accelerometer for the pitch axis, the system could be used in the event of a total
failure of the PFD and mechanical attitude indicator. In all events, the pilot should remember that
the autopilot will function even if the solid-state gyros and air data computer fails.
NOTE
Only GPS/NAV 1 is capable of being the navigation source to the autopilot in
the event of a PFD failure.
AUTOPILOT
If the autopilot should malfunction or perform improperly, do not attempt to identify or analyze
the problem. If the malfunction results in an abnormal change in the pitch and/or roll axis,
immediately regain control of the airplane by the input of control forces that override the
autopilot’s servo(s). Do not, under any circumstances, reengage an autopilot that has
malfunctioned until the problem is corrected.
OXYGEN SYSTEM
General
– The oxygen system has built-in internal logic to notify the pilot through the aircraft
annunciator if any of the following advisory conditions exists:
1. The system has not been activated above approximately 12,000 ft PA.
2. There is an inadequate quantity of oxygen.
3. The oxygen outlet pressure in not within range for proper operation.
The aircraft annunciator illumination provides the pilot with valuable information of a problem
with the oxygen system and to indicate to the pilot to check the oxygen display for more detailed
information on the problem. The conditions that the annunciator will illuminate are:
•
An altitude above 12,000 ft PA with the system turned off or in the display mode.
•
Inadequate oxygen quantity (high pressure less than 250 psig) with the system turned on.
•
Low pressure at the distribution manifold (Outlet Pressure less than 16.5 psig).
In addition to the illuminator of the annunciator, the respective pressure indicating lights on the
oxygen system display will flash alerting the pilot to what the problem is. If a system fault is
present, the fault light will illuminate on the display, and the other warnings will still function.
NOTE
Failures in the breathing stations, cannulas, masks, and flow meters are not
indicated on the display panel or annunciator unless it causes one of the three
alarms to activate.