Bleed Air Flashcards
An APU switch with only a flow bar showing indicates
It is armed for automatic operation
How is the APU bleed controlled and actuated?
Electrically controlled and electrically actuated
How are engine bleed valves controlled and actuated?
Electrically controlled and pneumatically actuated
When will engine bleed valves open?
When pressure is sufficient to cause airflow
What does an engine bleed switch with a flow bar off indicate?
The valve is armed or has a fault
How is an isolation valve controlled and operated?
Electrically controlled and operated
What does a duct leak light indicate?
A leak anywhere in the bleed system
What does a bleed light indicate?
Excessive bleed air temp. This causes the engine bleed valve to automatically close
What does a high stage light indicate?
Excessive pressure. This causes the HP valve to automatically close for the remainder of the flight
