CRJ 200 Panels & Systems

Question 1

TIE 1

Answer 1

Illuminates when DC bus 1 is not powered from its normal source. The service TRU or TRU 2 powers DC bus 1

Question 2

TIE 2

Answer 2

Illuminates when DC bus 2 is not powered from its normal source. The service TRU or TRU 1 powers DC bus 2

Question 3

ESS BUS TIE

Answer 3

When pressed in ties the SERV TRU to the DC Essential and Battery Bus during an Essential TRU 2 failure

• ESS TIE can only be selected manually

Question 4

AC ESS XFER

Answer 4

Illuminated when the AC Essential Bus is not powered by its normal source AC Bus 1 but AC Bus 2

• If AC BUS 1 and 2 are not powered battery is the power source

Question 5

Air Conditioning - Fault

Answer 5

Illuminates when an over pressure or high temperature has been detected in the pack

Question 6

Windshield Heat

Answer 6

Low - Applies low heat to 24 degrees

High - Applies high heat to 41 degrees

• Side Windows are heated to 24 degrees

Question 7

EMERGENCY LIGHTS SWITCH

Answer 7

ON - Turns On all Emergency Lights

OFF - Prevents the emergency lights from illuminating when electing power is loss or off

ARM - Interior and Exterior emergency lights illuminate when DC ESS power fails or OFF

Question 8

DC SERVICE

Answer 8

Powers the DC Service Bus from the Battery when it has no other power source

Question 9

BATTERY MASTER

Answer 9

On - Power the Battery Bus from both batteries

Question 10

AUTO XFER

Answer 10

FAIL - A GCU has disabled a generator auto transfer due to an over current condition

Switchlight isolates AC Bus 1 or AC Bus 2 from being powered from any other source other than its onside Generator

Pressed In - Auto transfer has been manually disabled for the associated main AC Bus

Question 11

IDG 1, 2 DISC

Answer 11

FAULT - HOTLOP in the Constant Speed Drive

DISC - IDG has disconnected from the accessory gear box due to over temperature or over torque

Pressed In - To manually disconnect the IDG

Question 12

FIRE DETECTION

Answer 12

WARN - Simulates a fire. Tests loop continuity and the ability to detect a fire on all engine loops, all jet pipe loops, and the APU loops

FAIL: Simulates a short. Tests the short discriminator circuit on all engine loops, all jet pipe loops, and the APU loops

Question 13

POWER/FUEL

Answer 13

PRESSED IN: The APU ECU is powered,
APU fuel SOV opens, APU door opens,
APU gauges appear on EICAS.

PUMP FAIL: The APU/CROSSFLOW pump
has failed.

SOV FAIL: The APU fuel SOV has failed.

Question 14

HYDRAULIC

Answer 14

ON: (Ground) Selected electric hydraulic pump will operate as long as any AC
power source is available.

(Flight) Selected electric hydraulic pump will operate as it’s power source is available.

*Pumps 1B and 2B require that the cross-side IDG is operating.

Question 15

HYDRAULIC PUMPS AUTO

Answer 15

Selected electric hydraulic pump will operate automatically when the flaps are not retracted and it’s power source is available.

• Pumps 1B and 2B require that the cross-side IDG is operating

Question 16

PRESSURIZATION CONTROL

Answer 16

PRESSED IN/MAN: Select manual pressurization mode

FAULT: Both cabin pressure controllers
have failed

Question 17

IDG will automatically disconnect

Answer 17

When an overtemperature or overtorque condition occurs

Question 18

In the event of a complete AC power failure in flight

Answer 18

The ADG bus will then supply emergency power to the AC essential bus and the 3B hydraulic pump

*The AC essential bus will then power essential TRU 1, which will power the DC essential business

Question 19

What is the Function of the APU

Answer 19

To Provide Electrical Power (30kva)
Air Conditioning
Bleed Air for Engine Start

Question 20

Can you start the APU with a Main Battery failure?

Answer 20

No, both batteries are required.

DC external power can be used to start the APU

Question 21

When does the CVR start recording?

Answer 21

When Electrical power is supplied to the aircraft

Question 22

When does the FDR start recording?

Answer 22

Beacon, strobes or Weight Off Wheels

Question 23

What voltage of electrical power does the CRJ use?

Answer 23

115 V AC and 28 V DC

Question 24

What are the primary sources of AC electrical power?

Answer 24

Two engine-driven Integrated Drive Generators (IDGs)

Question 25

What is the nominal rating of each Engine-Driven Generator

Answer 25

CRJ200: 30 kVA from 0 to 35,000 feet 25 kVA above 35,000 feet. CRJ700: 40 kVA from 0 to 41,000 feet

Question 26

What is an IDG made off?

Answer 26

A Constant Speed Drive and a Generator

Question 27

What are the Secondary Sources of AC power?

Answer 27

APU Air Driver Generator - ADG AC Ground power from External Panel

Question 28

What is the normal bus priority for AC BUS 1?

Answer 28

GEN 1 APU GEN GEN 2 EXT PWR

Question 29

What is the normal bus priority for AC BUS 2?

Answer 29

GEN 2 APU GEN GEN 1 EXT PWR

Question 30

What does the ADG powers in flight?

Answer 30

The AC ESS BUS and Hydraulic Pump 3B

Question 31

What is Function of the PWR TXFR OVERRIDE button on the ADG panel?

Answer 31

Returns AC power and Hydraulic pump 3B to normal operation.

Question 32

The Parameters for ADG deployment are?

Answer 32

Complete Power loss (AC BUS 1,2) all the Generators are off Weight OFF Wheels Parking Brake is off *On the ground, if the parking brake is off before you shut off all the generators, the ADG may deploy.

Question 33

In flight, when are AC UTIL BUS 1 and 2 loads shed?

Answer 33

When a generator fails and single generator operations occur

Question 34

What are the primary sources of DC electrical power?

Answer 34

Five Transformer Rectifier Units (TRUs) Two NiCad Batteries DC Ground Power

Question 35

Primary function of a TRU?

Answer 35

Rectifies 115 Vac electrical power to unregulated 28 Vdc

Question 36

What are the Voltage Ratings on the batteries

Answer 36

The Main Battery is a 24 Vdc 17 amp The APU Battery is a 24 Vdc 43 amp *The batteries are capable of supplying approximately 30 minutes of DC emergency power

Question 37

When is the DC EMER BUS displayed on the DC ELECTRICAL synoptic page?

Answer 37

When the bus is faulted and NOT powered

Question 38

In the event of the failure of AC BUS 2, how many TRUs would be unpowered?

Answer 38

The 3 TRUs are powered by AC BUS 2 AC BUS 1 AC BUS 2 AC SERV BUS

Question 39

In the event of the failure of AC BUS 1, how many TRUs would be unpowered?

Answer 39

2 TRUs are powered by AC BUS 1 TRU 1 ESS TRU

Question 40

What are the sources of Bleed Air for Aircraft Cooling?

Answer 40

APU, Engines, External Air Cart

Question 41

How many smoke detectors are installed in the Cargo Bay?

Answer 41

Two

Question 42

What does the illumination of the FAIL portion of a L/R PACK

Answer 42

Over-pressure or over-temperature

Question 43

Where are the Dual and Single Loop Fire Detection System?

Answer 43

Dual Loops - The engines, jetpipes, pylons, and the APU Single Loop - The main landing gear wheel bins

Question 44

What happens when the LH or RH ENG FIRE PUSH switchlight is pressed?

Answer 44

• Both squibs are armed • Fuel feed shutoff valve CLOSES • Bleed air shutoff valve CLOSES • Hydraulic shutoff valve CLOSES • Engine generator is tripped OFF

Question 45

What occurs when the APU ENG FIRE PUSH switchlight is pressed?

Answer 45

* APU shut downs | * Both squibs are armed • APU fuel feed shutoff valve CLOSES • APU LCV CLOSES • APU generator is tripped OFF.

Question 46

What occurs when either of the CARGO SMOKE PUSH switchlights is pressed?

Answer 46

* Cargo compartment fan stops | * Recirculation SOV CLOSES • Optional heater shuts down • Exhaust SOV CLOSES

Question 47

When does the Fuel System Computer transfers fuel from the Center Tank to the Wing Tanks?

Answer 47

When a Wing Tank fuel level drops to 94% | Via the Transfer Ejectors till the wing Tank reaches 97%

Question 48

What kind of pumps does the Hydraulic Systems have ?

Answer 48

1A and 2A are Engine Driven Pumps The "B" pumps and 3A are AC motor pumps

Question 49

How are Hydraulic Systems 1 and 2 cooled?

Answer 49

Oil and Heat Exchanger RAM Air Electric Cooling Fan *Hydraulic System 3 is not near any heat sources and because of its larger quantity has no provision for cooling

Question 50

What is the main function of the 14th-Stage Isolation Valve?

Answer 50

Allows both wings to be anti-iced from a single source in the event of valve failure or engine failure

Question 51

On the ANTI-ICE synoptic page, what is the significance of the valves labeled CMD in cyan?

Answer 51

Indicate the commanded position of the switch and not necessarily the actual position of the valves.

Question 52

Which Hydraulic System powers the landing gear, nosewheel steering, and brake systems?

Answer 52

System 3

Question 53

What are the primary functions of the PSEU?

Answer 53

- Landing gear | - Disables/rearms the anti-skid and nosewheel steering system

Question 54

What is the function of the Chine Tires on the nose gear?

Answer 54

To eject ground water away from aircraft engines

Question 55

What conditions must be met for an accurate reading of the Brake Wear Indicator Pins

Answer 55

The Brake Wear Indicator Pins must be checked with the brakes applied and Hydraulic Systems 2 and 3 pressurized

Question 56

When does the Anti-Skid become operation after touchdown?

Answer 56

When a 35-kt wheel spin-up signal is generated or a WOW signal is present after a 5-second delay * Minimum speed to operate is 10kts

Question 57

How are the Emergency Lights powered?

Answer 57

Four independent rechargeable battery packs that provide 15 minutes of energy *Batteries are charged via the DC ESS BUS

Question 58

The BULK FUEL Temperature must be above ____________for take off

Answer 58

-29C

Question 59

The 10th stage ISOL Valve and 14th stage SOVs fail________

Answer 59

10th Stage - Closed 14th Stage - Open

Question 60

How are the fuel Tanks vented?

Answer 60

NACA scoops on the under side of the wings

Question 61

Bleed Air Leak Detection - Which is Single and which is Dual Loop

Answer 61

10th Stage - Dual Loop 14th Stage - Single Loop

Question 62

With the EMER LTS switch in the ARM position, when would the emergency light illuminate?

Answer 62

When Essential DC or Essential AC power is lost

Question 63

What does BLEED MISCONFIG caution message indicate?

Answer 63

The 10th-stage bleed valves are still open in takeoff/landing configuration with wing and/or cowl anti-ice ON

Question 64

What kind of engines does the CRJ200 have?

Answer 64

General Electric CF34-3B1 high-bypass ratio turbine engines Providing 8,729 lbs of Thrust that can be increased 2% by the APR System to 9220 lbs

Question 65

What powers Ignition System A and B?

Answer 65

A is powered by the AC Essential Bus B is powered by the Battery Bus