Copyright D.P. Browne 2011

Pneumatics Bleed Air System Indications

Cross Feed Valve

APU

Bleed

Air

Eng 1 IP Air

Eng 1 HP Air

Pre Cooler

The bleed indications are displayed on the lower part of the BLEED system display page. They show the status of the engine bleed valves, APU bleed valve and the ground air (whenever the aircraft is on the ground). The pre coolers are shown with their respective out

Put value of temperature and pressure.

When the APU is running, the APU bleed valve status is shown on the Bleed display.  On the EWD, the message APU AVAIL appears, when the APU bleed air is not being used and the APU is running.

When the APU bleed air is selected it supplies bleed are to the aircraft and the display shows the bleed air path in green.

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The cross bleed valve may be opened automatically by the BMC or manually from the over head panel. When it is open, the display shows the air bleed flow

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