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Crj Notecards > Overhead panel > Flashcards

Overhead panel Flashcards

1
Q

What does the DC service switch power?

A 
Lights ( nav, beacon, boarding toilet and galley dome)
Boarding announcement
Cabin lighting
Service bus feed
Power sensing
Chart holder
Water and waste control
Runs off the APU battery direct bus
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2
Q

What lights illuminate with the Battery Master on?

A

AC ESS XFER switchlight
INOP portion of L &R boost pump switch lights
The fault portion of the PRESS CONT switch light
The OFF portion of the L& R PACK switch lights
MACH TRIM switch light

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3
Q

Regarding the AC switch light, what does the illumination of the AVAIL portion indicate?

A

The system has the correct voltage, frequency, and phase. 115v, 400hz, and 3 phase

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4
Q

Regarding the IDG guarded switchlight, what does the illumination of the FAULT portion indicate?

A

The associated IDG has either high oil temp or low oil pressure.

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5
Q

What does the disc portion of the IDG mean? And why would this happen?

A

The DISC portion indicates the associated IDG has been disconnected either manually or due to high temperature or severe torque.

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6
Q

What does the illumination of the AC ESS XFER switch light indicate?

A

AC bus is not powering the AC Essential bus

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7
Q

When should a generator be reset?

A

When directed by the QRH

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8
Q

Regarding the Auto XFER switchlight, what does the illumination of the FAIL portion indicate?

A

The associated GCU has detected a BUS fault or generator over current.
Affected generator is taken offline.
GCU inhibits the auto transfer system on that side.
Associated AC BUS can no longer be powered by the APU or offside.

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9
Q

What does the off portion of the AUTO XFER switchlight indicate?

A

Disables the auto transfer system on that side.

Can be reset

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10
Q

What is associated with a successful fire test?

A

FIRE SYS OK
Red LH ENG, RH ENG, and APU FIRE PUSH switch light illuminate.
Green LH, RH, and APU armed push to discharge switchlights illuminate.
Both master warning flashers illuminate.
FWD and AFT cargo smoke push switch lights illuminate.
Cargo bottle armed push to discharge switch light illuminate

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11
Q

What is the function of the L/R HYD SOV guarded switchlight?

A

To interrupt the flow of hydraulic fluid to the associated engine driven pump.

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12
Q

Regarding the L or R boost pump, what does the INOP portion and the ON portion indicate?

A

INOP- the pump outlet psi is too low

ON- the pump pressure is satisfactory

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13
Q

What does the fail portion of the Gravity XFLOW switchlight indicate?

A

The gravity cross flow valve is not in the commanded position.

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14
Q

Regarding the L or R XFLOW switch lights, what does the fail portion of the switch light indicate? The ON portion?

A

Fail-The cross flow valve failed to energize.

On- cross flow pump energized, fuel directed into low tank.

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15
Q

Explain the function of the XFLOW Auto Override switchlight, pressed in/out.

A

Pressed in, arms the crossflow pump for manual operation and inhibits the auto crossflow function ( switch is illuminated)

Pressed out, crossflow pump is disarmed for manual use and auto crossflow is available.

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16
Q

Wing A/I Cross Bleed rotary switch

A

From left, the right wing anti icing valve is closed and the cross bled valve opens allowing bleed air from the left engine to provide anti icing to both wings.

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17
Q

BLEED VALVES Rotary switch - AUTO

A

Allows for automatic operation of the bleed valves

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18
Q

BLEED VALVES rotary switch - CLSD

A

Selects the valves to the closed position

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19
Q

BLEED VALVES rotary switch - manual

A

The bleed source and position of the ISOL valve can be manually controlled.

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20
Q

ISOL toggle switch- CLSD

A

CLSD allows the valve to open automatically when the APU LCV is opened, during cross bleed starts and cycled open/closed during the automatic transfer of bleeds between the APU and engines.

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21
Q

ISOL toggle switch - OPEN

A

Allows manual operation of the valve in conjunction with the BLEED VALVE rotary switch in the manual position.

22
Q

Engine bleed valves are controlled by?

A

ACSC 2 air conditioning system controllers

23
Q

Bleed valves are limited to _ psi?

A

45 psi by the ACSC’s

24
Q

BLEED SOURCE rotary switch both

A

The left and right engine bleed valves are open, the APU LCV is closed

25
Q

BLEED SOURCE rotary switch L ENG

A

The left engine bleed valve is opened. The right engine bleed valve is closed and the APU LCV is closed.

26
Q

BLEED SOURCE rotary switch R ENG

A

The right engine bleed valve is open and the Left engine and the APU LCV are closed.

27
Q

APU PWR Fuel switch

A 
Pressed in ECU is powered, APU IN BITE status message 
APU SOV OPEN status message 
Inlet door opens
RPM and EGT on EICAS 2
Fuel pump comes on
28
Q

PUMP Fail portion of the APU

A

The fuel pump has failed

29
Q

SOV FAIL switch light APU

A

The APU SOV is not in the commanded position

30
Q

Start/stop switchlight on APU

A

Pressed in ignition is activated
Starter motor is energized
Fuel solenoid opens
APU start status message is displayed

31
Q

L/R Start switch light

A

Pressed in, isolation valve opens
Associated start valve opens
Start switch light illuminates
L or R engine start status message displayed

32
Q

STOP switch light

A

Discontinues the start sequence by closing the air turbine starter valve

33
Q

CONT switch light

A

Vicinity of thunderstorms
Moderate rain
Moderate turbulence
Contaminated runway

34
Q

Hydraulics- Toggle switch 1 (1B) 3B, and 2 (B) AUTO, ON,OFF

A

AUTO allows pump 1b to operate when its respective bus is powered and at least 1 generator is online, flaps are greater than zero

ON pump operates when its respective bus is powered, one gen online, regardless of flap position

OFF pump is off

35
Q

Hydraulics - toggle switch 3a

A

On pump is on

Off pump is off

36
Q

MAN ALT toggle switch. Up/down and hold

A

Controls the cabin pressurization in manual mode.

Up/down commands the cabin altitude to climb or descend.

Hold holds the selected cabin altitude

37
Q

EMER DEPRESS guarded switch light

A

Pressed in the manual DC motor will drive the outflow valve to fully open and depressurizes the cabin to 14,500. If below 14,500, the plane fully depressuizes.

38
Q

MAN RATE rotary switch

A

Controls the rate of change of the cabin altitude in manual mode

39
Q

L PACK switch lights

A

Pressed in supplies the flight deck through the mixing manifold.

40
Q

R PACK switchlight

A

Supplies the cabin with air from the mixing manifold.

41
Q

FAULT on pack switch light

A

Indicates either an over temp or over pressure

42
Q

Off portion of pack light

A

The associated pack is off

43
Q

RECIRC toggle switch on/off

A

On energizes both recirculating fans.

Off de - energizes both fans

44
Q

RAM AIR guarded switch

A

Open allows air from the ram air scoop to enter the mixing manifold. Supplies flight deck and pax cabin ventilation. Use only when depressurized. Max alt 15,000 ft.

45
Q

L and R MAN switch lights (ac)

A

Pressed in allows for manual control of the airflow thru the pack by the temp control valve.

46
Q

HOT/COLD toggle switches

A

Increases or decreases flight deck or pax cabin in manual mode

47
Q

WSHLD LH and RH TOGGLE SWITCHES

A

Low- all 4 panels 24 c

High - windshields heated to 41, sides are 24

48
Q

CARGO switch (3 positions)

A

Off closes intake and exhaust SOV’s to seal aft cargo bay

AIR SOV’s opened to allow recirculated or conditioned air to ventilate cargo bay

COND AIR provides automatic temperature control of aft cargo using an electric heater

49
Q

WING anti ice toggle switch

A

AILC ( anti ice leak detection controller) modulates the wing anti icing valves.
White n2 arcs appear 0-77%

50
Q

COWL LH and RH toggle switches

A

On allows the cowl anti ice SOV’s to open which allows bleed air into the leading edge of the cowls via a piccolo tube

51
Q

WSHLD test button

A

Pressed in, initiates a self test of the windshield heating system.

A successful test L and R WSHLD and L and R window heat caution message.

52
Q

PROBES toggle switch

A

ON: on ground with AC power:
TAT and pitot bases off
Static and AOA are heated
Pitot heads are half heated

Crj Notecards (2 decks)

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