CRJ900 Overhead Panel Flashcards
ELECTRICAL POWER PANEL
What lights will illuminate with the Battery Master on?
- The AC ESS XFERB switch light
- The 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
ELECTRICAL POWER PANEL
Regarding the AC switch light, what does the illumination of the AVAIL portion indicate?
- The system has the correct voltage, frequency and phase
ELECTRICAL POWER PANEL
Regarding the IDG guarded switch light, what does the illumination of the FAULT portion indicate? DISC portion?
- Associated IDG has either low oil psi and/or high oil temp
- The DISC portion indicates that the associated IDG has been disconnected
ELECTRICAL POWER PANEL
What does the illumination of the AC ESS XFER switch light indicate?
- AC BUS 1 is not powering the AC ESS BUS
ELECTRICAL POWER PANEL
When should a generator be reset?
- When directed by the QRH (Example QRH ELEC 12)
ELECTRICAL POWER PANEL
Regarding the AUTO XFER switch light, what does the illumination of the FAIL portion indicate?
- The associated GCU has detected a BUS fault or generator over current
- Affected generator is taken offline
- GCU inhibits the auto transfer system on the affected side
- Associated AC BUS can no longer be powered by the APU or offside
ELECTRICAL POWER PANEL
What does the DC service switch power?
- Lights (NAV, beacon, service, boarding, toilet and galley dome)
- Boarding announcement
- Cabin lighting, upward and downward
- Service bus feed
- Power sensing (Service Bus and TRU)
- Chart holder
- Water and waste control
FIREX DETECTION FIREX MONITOR PANEL
What is associated with the successful fire test?
- FIRE SYS OK advisory message
- LH ENG, RH ENG and APU FIRE PUSH switch light illuminated
- LH, RH and APU BOTTLE ARMED PUSH TO DISCHARGE switch light illuminate
- Both Master Warning Flashers illuminate
- FWD & AFT CARGO SMOKE PUSH switch lights illuminate
- Cargo BOTTLE ARMED PUSH TO DISCHARGE switch light illuminates
HYDRAULIC PANEL 1
What is the function of L/ R HYD SOV guarded switch light?
- To interrupt the flow of hydraulic fluid to the associated EDP (Engine driven pump)
FUEL PANEL
Regarding the L or R Boost pump, what does the INOP portion of the switch light indicate? The ON portion?
- The pump outlet psi is too low (INOP)
2. The pump outlet psi is satisfactory (ON)
FUEL PANEL
What does the FAIL portion of the GRAVITY XFLOW switch light indicate?
- The gravity cross flow valve is not in the commanded position
FUEL PANEL
Regarding the L or R XFLOW switch lights, what does the fail portion of the switch light indicate? The ON portion?
- Respective cross flow SOV is not in the commanded position or cross flow pump failed to energize with L or R cross flow SOV selected open
- ON cross flow pump energized, fuel directed into low tank
FUEL PANEL
Explain the fiction of the XFLOW AUTO OVERRIDE switch light. Pressed IN/OUT
- Pressed in arms the cross flow pump for manual cross flow and inhibits the auto cross flow function. (Switch is illuminated)
- Pressed out cross flow pump is disarmed for manual use and auto cross flow is available. (switch not illuminated)
BLEED AIR PANEL
WING A/I CROSS BLEED rotary switch
- From left the right wing anti-icing valve is closed and the crossbleed valve opens to permit bleed air from the left engine to provide anti-icing to both wings
- From right the left wing anti-icing valve is closed and the crossbleed valve opens to permit bleed air from the right engine to provide anti-icing to both wings
BLEED AIR PANEL
BLEED VALVES rotary switch
- AUTO allows for automatic operation the bleed valve
- CLSD selects the valves to the closed position
- MANUAL allows for manual open or closed operation of the valve (controlled by the ACSC)
- CLSD allows the valve to open automatically when the APU LCV is opened; during crossbleed starts and cycled open/closed during the automatic transfer of bleeds between the APU and engines
- OPEN allows manual operation of the valve in conjunction with the BLEED VALVES rotary switch in the manual position
BLEED AIR PANEL
BLEED SOURCE rotary switch
- 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)
- 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
- R ENG The right engine bleed valve is open if the right engine is capable of supplying bleed air. The left engine and the APU LCV are closed
APU PANEL
PWR FUEL switch
- Pressed in ECU is powered, APU IN BITE(built in test) status message
- APU SOV OPEN status message
- Air inlet door opens
- APU RPM and EGT gauges are displayed on the EICAS status page
- Fuel pumps comes on
APU PANEL
PUMP FAIL portion of the switch light illuminates
- Indicates a failed APU pump
