Bleed Air Systems

Question 1

CA - Which stages of bleed air are used by the CRJ 200

Answer 1

10th stage and 14th

Question 2

FO - Which stages of bleed air are used by the CRJ 700/900

Answer 2

7th and 10th stage

Question 3

CA - on the CRJ 200, what is the 10th stage bleed air used for

Answer 3

run the PACKS, Engine starting, outflow valve operation

Question 4

FO - on the CRJ 200, what is the 14th stage bleed air used for?

Answer 4

wing and cowl anti ice plus thrust reversers

Question 5

CA - what sources can provide air to the 10th stage bleed

Answer 5

left and right engines, APU and External air cart

Question 6

FO - what sources can provide air to the 14th stage bleed air ?

Answer 6

left and right engines

Question 7

CA - How are the 10th stage bleed valves operated

Answer 7

electronically controlled, spring loaded closed pneumatically operated

Question 8

FO - How are the 14th stage bleed valves operated?

Answer 8

electronically controlled,
Spring loaded open,
electrically powered

Question 9

CA - if the 10th stage valves fail, what position do the fail in?

Answer 9

Closed

Question 10

FO - if the 14th stage valves fail, what position do they fail in

Answer 10

Open

Question 11

CA - describe APU interlock protection

Answer 11

it protects the APU from back flow by commanding the LCV closed based on switch position. Left bleed or right bleed and Isol open

Question 12

FO - how does the CRJ200 detect leaks in the 10th stage manifold?

Answer 12

dual heat sensing loops