Pneumatics

Question 1

The pneumatic system can be supplied by the

Answer 1

Engines, APU, or Ground pneumatic source

Question 2

Engine bleed air comes from the _ and _ engine compressor stages

Answer 2

9th and 14th

Question 3

When does the 14th stage high stage valve (HSV) open automatically

Answer 3

During low engine thrust operations, engine cross bleed start, and anti ice operation

Question 4

The pneumatic system functional logic automatically closes the _ whenever any engine is supplying bleed air to the left pneumatic side

Answer 4

APU Bleed valve

Question 5

The pneumatic system automatic logic closes the left pack valve whenever the anti icing system is operating below _ft

Answer 5

24,600