Boeing 747: Pneumatic Panel

747 Pneumatic Panel by jerome meriweather
	AFT OverHead Glareshield Forward Pedestal
Up to Air Conditioning Left to Ice & Rain Down to Beacon To View a Control's Description, MouseOver it and ... Click to "Show" - MouseDown to "Drag" - DoubleClick to "Hide"

747 Photo and/or Graphic Element

Engine Bleed Air Switches

ON - Engine Bleed Air valve, pressure regulating valve and high pressure Bleed valve open by system logic when Bleed Air is available.
OFF (Blank) - Engine Bleed Air valve, pressure regulating valve and high pressure Bleed valve closed.

APU Bleed Air Switch

ON - Valve opens when the APU is running and APU N₁ rpm is greater than 95%.
APU Light - Indicates APU Bleed Air position disagrees with switch position.>

SYS Fault Lights
Indicate bleed air overheat or overpressure, pressure regulating valve or high pressure bleed valve open when they should be closed.

Isolation Valve Switches
Opens or close associated Isolation valve.

Isolation Valve Light - Indicate associated Isolation valve disagrees with switch position.

Pack Control Selectors

OFF - Pack valve closed.
NORM - Automatically selects Pack controllers A or B on alternate flights.
A or B - Selects respective Pack controller as the primary controller.