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failed
AIR COND TEMP HIGH TO/LAND
Excessive air temperature has been sensed in
the cabin or cockpit air distribution duct
AUTO PRESS FAIL TO/LAND Both automatic pressurization modes have failed
L (R) BLEED FAIL
TO/LAND
The affected engine bleed air valve has failed or
a temperature or pressure has exceeded limits
or the sensor has failed. Under certain low thrust
conditions (ground idle at high field elevations or
idle with single bleed on), there may be insufficient
pressure to keep the bleed valve open
L (R) BLEED LOOP
FAIL TO/LAND
A failure (open or short circuit) has been
detected in the bleed leak detection system
CABIN ALTITUDE TO/LAND
Normal cabin altitude caution is 8500 ft During
takeoff or landing above 7850 ft, the caution is
set to field altitude + 650 ft with a maximum limit
of 14 300 ft
CABIN PRESS FAULT TO/LAND
Either the pressure sensor has failed or cabin
altitude limiter function has failed
AIR CONDITIONING/PRESSURIZATION
Sep 14/2005 Flight Crew Operating Manual Volume 2
REV 4 CSP 100-6 02-04-11
DITCHING NOT AVAIL The ditching switch has been selected On with
the pressurization switch in the manual mode
EQPT RACK TEMP
HIGH TO/LAND The temperature in either equipment rack is high
PACK FAIL TO/LAND A failure has been detected in the PACK system
PACK LOOP FAIL TO/LAND
Both bleed air leak detection loops in the PACK
have failed during the power up self test
PACK TEMP HIGH TO/LAND
An overheat has been detected in the air conditioning
PACK system
L (R) PYLON LOOP
FAIL TO/LAND
Both bleed leak detection loops in the respective
pylon have failed during the power up self test
TRIM AIR FAIL TO/LAND A hot air regulating valve has failed
TRIM AIR LOOP FAIL TO/LAND
The bleed air leak detection loops around the
trim air ducting have failed
XBLEED FAIL TO/LAND
The crossbleed valve has failed to move to the
commanded position
AIRCOND FAULT TO/LAND
A fault has been detected in the air conditioning
system or there has been a loss of temperature
sensing
BLEED LOOP FAULT TO/LAND
A fault has been detected in the bleed leak
detection loop system and redundancy is lost
L (R) BLEED FAULT TO/LAND
The bleed pressure data is invalid, or the
affected flow control valve is failed closed
CABIN ALT WARN
HIGH LAND
A high airport takeoff or landing has been initiated
and the pressurization system is in the
automatic mode
EQPT RACK COOL
FAULT TO/LAND
A fault has been detected in the avionics equipment
rack cooling system
MANUAL PRESS FAIL TO/LAND
The manual pressurization mode is not operational
PACK COOL AIR FAIL TO/LAND
The ram air regulating valve supplying cooling
air to the PACK heat exchanger has failed
RAM AIR FAIL TO/LAND
The RAM AIR ventilation valve has failed to
move to the commanded position
AIR COND MAN TEMP
ON
The air conditioning temperature control is in
manual mode
MESSAGE INHIBITS MEANING
AURAL
WARNING
REV 4
AIR CONDITIONING/PRESSURIZATION
Volume 2 Flight Crew Operating Manual Sep 13/2004
02-04-12 CSP 100-6 REV 1
AIR SOURCE OFF The AIR SOURCE switch is in the OFF position
resulting in no conditioned air entering the cabin
BLEED OFF The L, R, and APU BLEEDs are OFF
DITCHING ON
The DITCHING switch/indicator has been
selected ON. This closes the flow control valves
and commands the outflow valve open for 100
seconds or 10 seconds after cabin differential
pressure decreases below 1595 psid. The
outflow valve then closes
EMER DEPRESS ON
Emergency depressurization has been selected.
Emergency depressurization commands the outflow
valve open, but will attempt to limit the cabin
altitude to approximately 15 000 ft
MANUAL PRESS ON The MANUAL PRESSURIZATION mode has
been selected
PACK ONLY
The AIR SOURCE switch is in the PACK ONLY
position, resulting in all air conditioning bleed air
being routed through the PACK
RAM AIR ON The RAM AIR switch has been selected ON,
providing ram air ventilation
XBLEED OPEN The cross bleed valve is open
TRIM AIR ONLY
The AIR SOURCE switch is in the TRIM AIR
ONLY position, resulting in all air conditioning
bleed air being routed through the trim air system.
The air will be warm
MESSAGE INHIBITS MEANING
AURAL
WARNING
1
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Bombardier AIR CONDITIONING/PRESSURIZATION(14)
