BOMBARDIER BD-100-1A10, Operating Manual

Page: 106 / 544

AIR CONDITIONING/PRESSURIZATION
Volume 2 Flight Crew Operating Manual Sep 13/2004
02-04-10
CSP 100-6
REV 1
EICAS MESSAGES
The air conditioning/pressurization system CAS messages and voice aurals are listed below. A brief explanation of each
message is provided.
MESSAGE INHIBITS MEANING
AURAL
WARNING
CABIN ALTITUDE TO/LAND
The normal cabin altitude warning is at 9400 ft
When a takeoff or landing is conducted above
7850 ft, the warning is at the field ele
1550 ft, but limited to no higher than 14 300 ft
“Cabin
Altitude”
CABIN DELTA P TO/LAND
The cabin differential pressure is greater than
9.2 psid or less than -0.5 psid
L (R) BLEED LEAK
TO/LAND
A leak has been detected in the bleed air ducting
downstream of the bleed valve
PACK LEAK TO/LAND A leak has been detected in the pack ducting
TRIM AIR LEAK TO/LAND
A leak has been detected in the bleed air ducting
downstream of the right flow control valve, up to
the precooler crossover and up to the trim air
check valve
L (R) PYLON BLEED
LEAK
TO/LAND
A leak has been detected in the engine pylon or
tail cone (before shutoff valve)
AIR COND TEMP FAIL TO/LAND
The automatic temperature control system has
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 insuffi-
cient 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 al 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