Pneumatic System

Question 0

When do 10th SOVs close automatically

Answer 0

Over pressure or over temp

Question 1

How are 10th stage SOVs operated

Answer 1

Pneumatically operated and electrically controlled

Question 2

Check Valves

Answer 2

Prevent reverse flow from engine to engine

Question 3

Failure position of 14th stage SOVs

Answer 3

Open

Question 4

How are the 14th stage SOVS operated

Answer 4

Pneumatically operated and electrically controlled

Question 5

14th stage Isol valve fail position

Answer 5

Closed

Question 6

Bleed air leak detection

Answer 6

Wings
Fuselage
Pylons

Question 7

DUCT MON knob

Answer 7

TEST - simulates overheat and logic test of the 10th & 14th stage (checks for continuity of the loops)
LOOP A or B - tests for short circuits in the 10th stage dual loops

Question 8

What does the 10th stage DUCT FAIL PBA Light indicate

Answer 8

Bleed air leak in associated duct

Question 9

10th stage bleed air used for what

Answer 9

Air conditioning
Engine start
Pressurization
Avionics cooling

Question 10

What does DUCT FAIL lights on 14th stage PBA indicate

Answer 10

Bleed air leak in associated duct