Cabin Pressurization Panel Flashcards
CABIN PRESSURE PANEL
Q: Which valves will receive a close command when the DITCHING pushbutton is depressed (ARPO)?
Ref: (FOM VOL. III-DSC-21-20-30, FOM VOL. III-DSC-21-20-40)
- Avionics Inlet and Extract valves
- Ram air inlet
- Pack Flow Control valves
- Outflow valve (only if in AUTO mode)
CABIN PRESSURE PANEL
Q: Will the DITCHING pushbutton always close the outflow valve?
Ref: (FOM VOL. III-DSC-21-20-40)
Not if the outflow valve is under manual control
CABIN PRESSURE PANEL
Q: Can the pilot control the outflow valve?
Ref: (FOM VOL. III-DSC-21-20-30)
Yes, select MAN on the MODE SEL and use the MAN V/S CTL switch
CABIN PRESSURE PANEL
Q: How many controllers are in the pressurization system?
Ref: (FOM VOL. III-DSC-21-20-30)
2, only one is used at a time and they swap roles after each landing
CABIN PRESSURE PANEL
Q: How do you manually switch controllers?
Ref: (FOM VOL. III-DSC-21-20-40)
Switch MODE SEL to MAN for 10 seconds, then back to AUTO
CABIN PRESSURE PANEL
Q: What does an amber FAULT light in the MODE SEL pushbutton indicate?
Ref: (FOM VOL. III-DSC-21-20-40)
Both automatic pressure controllers are faulty
CABIN PRESSURE PANEL
Q: From what source does the pressurization system obtain landing elevation?
Ref: (FOM VOL. III-DSC-21-20-40)
FMGC database
CABIN PRESSURE PANEL
Q: When the mode selector is out of the AUTO position, how do you set a landing elevation?
Ref: (FOM VOL. III-DSC-21-20-40)
Manually by selecting landing elevation via the LDG ELEV dial
CABIN PRESSURE PANEL
Q: What protects the airframe from excessive cabin differential pressure?
Ref: (FOM VOL. III-DSC-21-20-20)
2 pressure relief valves (safety valves)
CABIN PRESSURE PANEL
Q: How many outflow valve motors are installed?
Ref: (FOM VOL. III-DSC-21-20-10)
3, One for each CPC and one for manual control
