747 Pressurization
by jerome meriweather
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Up to Oxygen
Left to Cargo Fire
Down to Air Conditioning
To View a Control's Description, MouseOver it and ...
Click to "Show" - MouseDown to "Drag" - DoubleClick to "Hide"
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747 Photo and/or Graphic Element
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Cabin Altitude AUTO Select
- NORM - Automatically selects cabin altitude controller A or B on alternate flights.
- Selected controller is the primary controller.
- Automatically selects the secondary controller as the primary controller.
- A or B - Selects the associated cabin altitude controller as the primary controller.
Outflow Valves OPEN/CLOSE Switch
Controls position of Outflow valve in manual mode.
Outflow Valve Manual Switches
- ON - Outflow valve is in Manual mode.
- OFF - Outflow valves automatically controlled.
Outflow Valve Position Indicators
Indicates position of outflow valve.
Landing Altitude Control
When in MAN, rotating sets Landing Altitude.
LDG ALT Switch
Turn on controlled Anti-Ice and defogging heat to the associated window.
- PUSH ON (MAN) - Overrides any landing altitude inputs to cabin altitude controllers from the FMC.
When pushed ON, Landing altitude must be set Manually and is displayed on EICAS following by MAN.
- PUSH OFF (AUTO)
- Landing altitude is automatically input to cabin altitude controllers from FMC.
- Landing altitude information from FMC is displayed on EICAS followed by AUTO.