The APU bleed-air control system switch allows selection of the APU as a source of bleed air if the aircraft is below _____ feet AGL.
Correct!
Wrong!
The maximum air pressure that should ever be seen in the manifold is:
Correct!
Wrong!
You must not apply external air to aircraft without electrical power at the ESS DC buses, i.e., external AC or DC power.
Correct!
Wrong!
If we have one pack shut off, what should the minimum manifold pressure be?
Correct!
Wrong!
When the left or right bleed pressure is _____ an amber L or R BLEED PRESSURE LOW message appears.
Correct!
Wrong!
The Bleed-Air Augmentation Valve (BAAV) is a spring-loaded-closed, solenoid-controlled valve in the left bleed-air manifold. It is energized open by the ECU when starting the APU:
Correct!
Wrong!
The minimum air pressure that should ever be seen in the manifold is:
Correct!
Wrong!
At what pressure would the L or R BLEED PRESSURE HI amber message come on?
Correct!
Wrong!
The high-stage valve is a electrically operated, spring-loaded-closed modulating valve. It is located at the HP eighth-stage bleed ports and is connected to the interservices fairing on each BR710 engine.
Correct!
Wrong!
It is pneumatically operated! The function of the high-stage valve is to augment or replace midstage (HP5) bleed air when the bleed-air manifold temperature or pressure drops below the minimum required by the operating configuration. It has no electrical components and receives its opening servo pressures from the servo pressure regulator/torque motor as commanded by the bleed air controller.
The left and right bleed-air manifold pressure sensors (transducers) are _____. They provide manifold pressure readings to their respective bleed-air controllers.
Correct!
Wrong!
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Minimum pressures and all temperatures are set and maintained by the Bleed Air Controllers (BACs).
Correct!
Wrong!
Gulfstream G550 – Pneumatics