What are the sources of air for the system?
Engines
APU
ground air
What does the pneumatic system supply air for?
Anti ice
Air conditioning
Pressurization
Engine starting
What sides of the system do the APU and ground air supply?
APU left side
Ground air right side
When is the 9th and 14th stage used?
9th stage, high power settings
14th stage, low power, cross bleed start, anti icing operations.
When does the cross bleed valve open?
Engine starts
Anti icing
Where are the leak detectors located and what do they do?
3 of them by the engine bleed valves and APU bleed valve.
Detect high temps- meaning bleed leak