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RJ Stuff > CRJ 200 Panels & Systems > Flashcards

CRJ 200 Panels & Systems Flashcards

1
Q

TIE 1

A

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

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2
Q

TIE 2

A

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

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3
Q

ESS BUS TIE

A

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
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4
Q

AC ESS XFER

A

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
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5
Q

Air Conditioning - Fault

A

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

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6
Q

Windshield Heat

A

Low - Applies low heat to 24 degrees

High - Applies high heat to 41 degrees

  • Side Windows are heated to 24 degrees
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7
Q

EMERGENCY LIGHTS SWITCH

A

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

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8
Q

DC SERVICE

A

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

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9
Q

BATTERY MASTER

A

On - Power the Battery Bus from both batteries

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10
Q

AUTO XFER

A

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

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11
Q

IDG 1, 2 DISC

A

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

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12
Q

FIRE DETECTION

A

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

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13
Q

POWER/FUEL

A

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.

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14
Q

HYDRAULIC

A

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.

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15
Q

HYDRAULIC PUMPS AUTO

A

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
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16
Q

PRESSURIZATION CONTROL

A

PRESSED IN/MAN: Select manual pressurization mode

FAULT: Both cabin pressure controllers
have failed

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17
Q

IDG will automatically disconnect

A

When an overtemperature or overtorque condition occurs

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18
Q

In the event of a complete AC power failure in flight

A

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

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19
Q

What is the Function of the APU

A

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

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20
Q

Can you start the APU with a Main Battery failure?

A

No, both batteries are required.

DC external power can be used to start the APU

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21
Q

When does the CVR start recording?

A

When Electrical power is supplied to the aircraft

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22
Q

When does the FDR start recording?

A

Beacon, strobes or Weight Off Wheels

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23
Q

What voltage of electrical power does the CRJ use?

A

115 V AC and 28 V DC

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24
Q

What are the primary sources of AC electrical power?

A

Two engine-driven Integrated Drive Generators (IDGs)

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25
Q

What is the nominal rating of each Engine-Driven Generator

A

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

CRJ700: 40 kVA from 0 to 41,000 feet

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26
Q

What is an IDG made off?

A

A Constant Speed Drive and a Generator

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27
Q

What are the Secondary Sources of AC power?

A

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

28
Q

What is the normal bus priority for AC BUS 1?

A

GEN 1
APU GEN
GEN 2
EXT PWR

29
Q

What is the normal bus priority for AC BUS 2?

A

GEN 2
APU GEN
GEN 1
EXT PWR

30
Q

What does the ADG powers in flight?

A

The AC ESS BUS and Hydraulic Pump 3B

31
Q

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

A

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

32
Q

The Parameters for ADG deployment are?

A

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.

33
Q

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

A

When a generator fails and single generator operations occur

34
Q

What are the primary sources of DC electrical power?

A

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

35
Q

Primary function of a TRU?

A

Rectifies 115 Vac electrical power to unregulated 28 Vdc

36
Q

What are the Voltage Ratings on the batteries

A

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

37
Q

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

A

When the bus is faulted and NOT powered

38
Q

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

A

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

39
Q

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

A

2 TRUs are powered by AC BUS 1

TRU 1
ESS TRU

40
Q

What are the sources of Bleed Air for Aircraft Cooling?

A

APU, Engines, External Air Cart

41
Q

How many smoke detectors are installed in the Cargo Bay?

A

Two

42
Q

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

A

Over-pressure or over-temperature

43
Q

Where are the Dual and Single Loop Fire Detection System?

A

Dual Loops - The engines, jetpipes, pylons, and the APU

Single Loop - The main landing gear wheel bins

44
Q

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

A

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

45
Q

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

A
  • APU shut downs

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

46
Q

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

A
  • Cargo compartment fan stops

* Recirculation SOV CLOSES
• Optional heater shuts down
• Exhaust SOV CLOSES

47
Q

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

A

When a Wing Tank fuel level drops to 94%

Via the Transfer Ejectors till the wing Tank reaches 97%

48
Q

What kind of pumps does the Hydraulic Systems have ?

A

1A and 2A are Engine Driven Pumps

The “B” pumps and 3A are AC motor pumps

49
Q

How are Hydraulic Systems 1 and 2 cooled?

A

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

50
Q

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

A

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

51
Q

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

A

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

52
Q

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

A

System 3

53
Q

What are the primary functions of the PSEU?

A
  • Landing gear

- Disables/rearms the anti-skid and nosewheel steering system

54
Q

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

A

To eject ground water away from aircraft engines

55
Q

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

A

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

56
Q

When does the Anti-Skid become operation after touchdown?

A

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
57
Q

How are the Emergency Lights powered?

A

Four independent rechargeable battery packs that provide 15 minutes of energy

*Batteries are charged via the DC ESS BUS

58
Q

The BULK FUEL Temperature must be above ____________for take off

A

-29C

59
Q

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

A

10th Stage - Closed

14th Stage - Open

60
Q

How are the fuel Tanks vented?

A

NACA scoops on the under side of the wings

61
Q

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

A

10th Stage - Dual Loop

14th Stage - Single Loop

62
Q

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

A

When Essential DC or Essential AC power is lost

63
Q

What does BLEED MISCONFIG caution message indicate?

A

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

64
Q

What kind of engines does the CRJ200 have?

A

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

65
Q

What powers Ignition System A and B?

A

A is powered by the AC Essential Bus

B is powered by the Battery Bus

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