BASIC SYSTEMS

Question 1

How many generators are installed?

Answer 1

• 4 generators:
  o 2 engine driven, 1 APU, 1 ADG

Question 2

What is the AC power priority?

Answer 2

On-side, inside, cross side, external

Question 3

What converts AC power to DC power?

Answer 3

5 TRUs convert 115v AC power to 28v DC power

Question 4

What is IDG logic? (In relation to hydraulic pumps)

Answer 4

• Pumps 1B, 2B, and 3B operate according to IDG logic
• If 1A fails, 1B is powered by Gen 2
• If 2A fails, 2B is powered by Gen 1
• If 3A fails, 3B is powered by either generator
• When hydraulic pumps are in AUTO mode, for B pumps to operate, IDG logic must be met and flaps must be greater than 0

Question 5

How many hydraulic pumps are there?

Answer 5

• 2 engine driven pumps
• 4 ACMPs

Question 6

What powers each hydraulic pump/system?

Answer 6

• 1A is an engine driven pump
• 2A is an engine driven pump
• 3A is an ACMP
• 1B is an ACMP
• 2B is an ACMP
• 3B is an ACMP

Question 7

Will hydraulic system 3 be powered in the event both engines and the APU generators are inop? If so, by what?

Answer 7

Yes, when the ADG deploys, hydraulic pump 3B will operate regardless of switch position

Question 8

What will cause the ADG to deploy?

Answer 8

Loss of all AC power and last source of AC power was internal
* Weight off wheels is sensed (DC powered)
* Parking brake is released (will not deploy with pb engaged)
* The ADG can also be deployed manually by pulling the ADG manual deploy handle at the bottom of the lower pedestal

Question 9

What does the BLEED MISCONFIG message indicate in the CRJ 200?

Answer 9

a. Gear down or flaps greater than 0
b. 10th stage engine bleeds open
c. Wing and/or cowl anti-ice selected on

Question 10

Which phase of flight are you not permitted to operate with a BLEED MISCONFIG message?

Answer 10

Takeoff and landing

Question 11

TRUE or FALSE: Is it acceptable to operate the engines in the amber N2 arcs as long as you have a green WING COWL ANTI ICE advisory message?

Answer 11

• The ICE advisory message indicates the wings have adequate temperature and pressure to provide ice protection even if the N2 gauge is in the yellow arc
• The amber arc reminds pilots that N2 should be 78% or greater to provide sufficient bleed air to the system

Question 12

Describe the APU LCV interlock protection.

Answer 12

a. Interlock protection is used to protect the APU from backflow of high-pressure air generated by the engines.
b. APU LCV will close under the following conditions:
1. Left 10th SOV selected OPEN or:
2. Right 10th SOV and 10th ISOL valve selected OPEN

Question 13

What powers the primary flight controls?

Answer 13

● The primary flight controls are the elevators, rudder, ailerons, and spoilerons
● The secondary flight controls are the flaps, spoilers, GLDs, and aileron, rudder, and STAB trims
● Movement of the cockpit controls is transmitted mechanically via cable/pushrods to the aileron, rudder, and elevator PCUs that hydraulically move the control surfaces
● Spoilerons are electrically controlled and hydraulically actuate

Question 14

What powers the flaps?

Answer 14

The flaps are electrically actuated and electrically driven by 2 AC power drive units

Question 15

When will the fuel system activate to correct a fuel imbalance?

Answer 15

When a fuel imbalance of more than 200 pounds exists between the wing tanks, the XFLOW/APU pump energizes to correct, the process is stopped when the fuel quantity of the low tank exceeds the other tank by 50 pounds (PRM)

Question 16

Why is the 14th stage ISOL valve opened during single engine operations?

Answer 16

a. The 14th stage ISOL allows both wings to be anti-iced from a single source in the event of an engine failure or failure of a wind anti-icing valve, pneumatically actuated and electrically controlled and spring loaded to the closed position (PRM)