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CRJ-900 Limitations > Overhead Panel > Flashcards

Overhead Panel Flashcards

1
Q

What lights will illuminate with the BATTERY MASTER ON? (No AC power)

A
  1. The AC ESS XFER switch light
  2. The INOP portion of the L&R boost pump switch light
  3. The fault portion of the PRESS CONT switch light
  4. The OFF position of the L&R PACK switch light
  5. MACH TRIM switch light

Powering main battery direct BUS, APU battery direct BUS, DC battery BUS

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2
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

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3
Q

Regarding the IDG guarded switch light, what does the illumination of the FAULT portion indicate? DISC portion?

A
  1. Associated IDG has either low oil pressure or high oil temperature
  2. The DISC portion indicates that the associated IDG has been disconnected
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4
Q

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

A

AC BUS 1 is not being powering the AC ESS BUS

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5
Q

When should a generator be rest?

A

When directed by the QRH

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6
Q

Regarding the AUTO XFER switch light, what does the illumination of the FAIL portion indicate?

A
  1. The associated GCU (generator control unit) has detected a BUS fault or generator over current
  2. Affected generator is taken offline
  3. GCU inhibits the auto transfer system on the affected side
  4. Associated AC BUS can no longer be powered by the APU or offside
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7
Q

What is associated with the successful fire test?

A
  1. FIRE SYS OK advisory message
  2. LH ENG, RH ENG and APU FIRE PUSH switch light illuminate
  3. LH, RH and APU BOTTLE ARMED PUSH TO DISCHARGE switch light
  4. Both master warning flashers illuminate
  5. FWD & AFT CARGO SMOKE PUSH switch light
  6. Cargo BOTTLE ARMED PUSH TO DISCHARGE switch light
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8
Q

What is the function of the L/R HYD SOV guarded switch light

A

To interrupt the flow of hydraulic fluid to the associated EDP (engine driven pump)

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9
Q

Regarding the L and R Boost pump, what does the INOP portion of the switch light indicate? The ON portion?

A
  1. The pump outlet psi is too low (INOP)

2. The pump outlet psi is satisfactory (ON)

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10
Q

What does the FAIL portion of the GRAVITY XFLOW switch light indicate?

A

The gravity crossflow valve is not in the commanded position

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11
Q

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

A
  1. Respective crossflow SOV is not in the commanded position or crossflow pump failed to energize with L or R crossflow SOV selected open
  2. ON crossflow pump energized, fuel directed into low tank
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12
Q

Explain the function of the XFLOW AUTO OVERRIDE switch light. Pressed IN/OUT

A
  1. Pressed in arms the crossflow pump for manual crossflow and inhibits the auto crossflow function. (Switch is illuminated)
  2. Pressed out crossflow pump is disarmed for manual use and auto crossflow is available. (Switch not illuminated)
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13
Q

Wing A/I cross bleed rotary switch

A
  1. From left the right wing anti-Icing valve is closed and the crossbreed valve opens to permit bleed air from the left engine to provide ant-icing to both wings
  2. From right the left wing anti-icing valve is closed and the crossbreed valve opens to permit bleed air from the right engine to provide ant-icing to both wings
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14
Q

BLEED VALVES rotary switch

A
  1. AUTO allows for automatic operation the bleed valve
  2. CLSD selects the valves to the closed portion
  3. MANUAL allows for manual open or closed operation of the valve (controlled by the ACSC)
    - ISOL toggle switch
    - CLSD allows the valve to open automatically when APU LCV is open
    - OPEN allows manual operation of the valve in conjunction with the BLLED VALVES rotary switch in the manual position
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15
Q

BLEED SOURCE rotary switch

A

BOTH ENG the left and right engine bleed valve is open if both engines are capable of supplying bleed air. The APU LCV is closed (normal operation)

  1. L ENG the left engine bleed valve is opened if the left engine is capable of supplying bleed air. The right engine bleed valve and the APU LCV are closed.
  2. R ENG is the same
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16
Q

PWR FUEL switch (APU)

A
  1. Pressed in ECU is powered, APU IN BITE (built in test) status message
  2. APU SOV OPEN status message
  3. Air inlet door opens
  4. APU RPM and EGT gauges are displayed on the EICAS status page
  5. Fuel pump comes on
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17
Q

PUMP FAIL portion of the switch light illuminates

A

Indicates a failed APU pump

18
Q

SOV FAIL portion of the switch light

A

Indicates APU SOV not in the commanded position

19
Q

START /STOP switch light

A
  1. Pressed in ignition is activated
  2. Starter motor is energized
  3. Fuel shutoff valve opens
  4. Start switch light illuminates
  5. APU START status message is displayed
20
Q

L/R START switch light

A
  1. Pressed in, isolation valve opens
  2. Associated start valve opens
  3. START switch light illuminates
  4. L or R ENGINE START status message displayed
21
Q

STOP switch light

A

Discontinues the start sequence by closing the ATS (air turbine starter) valve on the associated engine.

22
Q

CONT switch light

A

Engages the continuous ignition

23
Q

HYDRAULIC PANEL
Toggle switch 1 (1B)
Toggle switch 3A
Toggle switch 3B and Toggle switch 2(2B)

A
  1. AUTO position allows pump 1B to operate when it’s respective BUS is powered and at least 1 generator is online and the flaps out of the zero position
  2. ON position allows the pump to operate when it’s respective BUS is powered and at least 1 generator online, regardless of flap position
  3. OFF position pump is off

3A

  1. ON position allows the operation of the AC motor pump 3A
  2. OFF position, the pump is off

3B and 2 (1B)
1. Have the same operation as toggle switch 1 (1B)

24
Q

LDG ELEV control knob

A

Pre-selects the landing field elevation

25
Q

MAN ALT toggle switch

A
  1. Controls the cabin pressurization in manual mode
  2. UP/DN commands the cabin altitude to climb or descend
  3. HOLD holds the selected cabin altitude
26
Q

EMER DEPRESS guarded switch light

A

Pressed in the manual DC motor will drive the outflow valve to fully open. Depressurizes the airplane. Switch light illuminates

27
Q

PRESS CONT switch light

A
  1. Pressed in allows the outflow valve to be manually operated, in conjunction with the MAN RATE toggle and rotary switches. (MAN portion of the switch light illuminates)
  2. The fault portion of the switch light illuminates indicates both pressurization controller have failed
28
Q

MAN RATE Rotary switch

A

With the cabin pressurization in the manual mode, controls the rate of change of the cabin altitude

29
Q

PACK (pneumatic air conditioning kit) L or R

A
  1. L PACK switch light pressed in supplies the flight deck through the mixing manifold
  2. R PACK switch light pressed in supplies the Passenger Cabin through the mixing manifold
    - FAULT portion of the switch light illuminates
  3. Indicates either an over temperature or over pressure condition
    - OFF portion of the switch light illuminates
  4. Indicates that the associated PACK is off
30
Q

RECIRC toggle switch

A
  1. ON energizes both recirculation fans

2. Off de-energizes both fans

31
Q

RAM AIR guarded switch light

A

Selecting switch to OPEN allows air from the ram air scoop to enter the mixing manifold. This will allow flight deck and passenger cabin ventilation. (Switch light illuminates)

32
Q

HOT/COLD toggle switches

A

Increases or decreases flight deck or passenger cabin temperature in manual mode

33
Q

CKPT and CABIN rheostat control knobs

A
  1. Allows for auto temperature control via the ACSC mixing hot and cold air
  2. Allows the pilot to set a pre-selected temperature in the flight deck as well the passenger cabin
34
Q

CARGO switch (3 positions)

A
  1. Off closes intake and exhaust SOVs to seal aft cargo bay enclosure
  2. AIR SOVs opened to allow recirculated or conditioned air to ventilate the aft cargo bay
  3. COND AIR will provide automatic temperature control of aft cargo bay utilizing electric heater
35
Q

WING toggle (anti ice panel)

A
  1. On AILC (anti-ice leak detection controller) modulates the wing anti-icing valves
  2. White N2 arcs appear 0-77%
36
Q

COWL LH and RH toggle switch (anti-icing panel)

A
  1. ON allows the cowl anti-ice SOVs to open which will allow bleed air into the leading edge of the cowls via a piccolo tube
37
Q

DET TEST switch light (provides 3 separate functions)

A
  1. The switch light is used to test the ice detector circuitry and probes. Successful test will be indicated by an ICE caution and illumination of the DET TEST switch light
  2. Pressed in and hold by the pilot will test the probes and sensor heaters. Successful test will be indicated by a green ADS HEAT TEST OF advisory message
  3. When in icing conditions with the wing or cowls off, the switch lights will illuminate, along with an ICE caution message
38
Q

WSHLD LH and RH toggle switches

A
  1. Low all 4 panels are heated to 24 degrees Celsius

2. HI windshield are heated to 41 degrees Celsius

39
Q

WSHLD TEST button

A

Pressed in, initiates a self test of the windshield heating system. A successful test is indicated by the L and RWSHLD HEAT and L and R WINDOW HEAT caution message. (Windshields are windows must be energized prior to the test)

40
Q

PROBES toggle switches

A
  1. ON the ground with AC power supplied, TAT and pitot bases are off
  2. Static and AOA are heated
  3. Pitot heaters are half heated
41
Q

What does the DC service switch power?

A
  1. Lights (NAV, beacon, service, boarding, toilet, and galley dome)
  2. Boarding announcement
  3. Cabin lighting, upwards and downward
  4. Service BUS feed
  5. Power sensing (Service BUS and TRU)
  6. Chart holder
  7. Water and waste control

CRJ-900 Limitations (24 decks)

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