Operation Manual Part 2

Aerosoft – Digital Aviation
CRJ-70 & CRJ-900
AOM PART 2
Systems Description
VOL
5
5-1-39
26-Jul-2017
• ALT LIMITER CAUTION (amber): Altitude limitation function unserviceable
• OVDB COOL CAUTION (AMBER): Ground valve open in flight
• AUTO PRESS 1/2 FAIL STATUS (white): Cabin pressure control unserviceable
• AUTO PRS 1/2 FAIL STATUS (white): Active channel is lost in manual mode
• CABIN PRESS MAN STATUS (white): Landing elevation set above 8.000ft
• CPAM FAIL STATUS (white): Ground valve has closed on ground
• OUTFLOW VLV OPEN STATUS (white): Outflow valve in fully open position
1. MONITORED DATA
2. ACTIVE DATA
Item
Description
Green font
White font
Amber font
Red font
Amber dashes
C ALT
Cabin altitude in
100ft increments
Monitored
data
Active data
> 8.500ft
> 10.000ft
Invalid data
RATE
Rate of climb of
cabin altitude
Monitored
data
Active data
-
-
Invalid data
DELTA
P
Differential pressure
between ambient
and cabin pressure
Monitored
data
Active data
-
> 8.6PSI
Invalid data
LDG
ELEV
Selected landing
field elevation in
20ft increments.
Displayed in cyan
Invalid data,
elevations
above 15.000ft
and below
-2.000ft
Two cabin pressure controllers are available to regulate cabin pressure. Only one cabin pressure controller is
active at a time – the other one is on standby but automatically updates the status of the cabin pressurization
system. The pressure controller will automatically adjust the outflow valves position to maintain a differential
pressure of 8.3 PSI.