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122 Cards in this Set
- Front
- Back
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What accessories are driven off the N2 accessory gearbox? (fish oil plus) |
Fuel pump (Engine driven) IDG Starter (Air turbine) hydraulic pump (Engine driven) Oil pump. FADEC alternator. |
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What is the engine bleed air used for?
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Engine start. Air conditioning. Pressurization. Wing and cowl anti-ice. |
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What stages of bleed air are used?
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Normally 6th stage. 10th stage used when demand exceeds capability of 6th stage.
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What allows 10th stage bleed air availability?
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Air conditioning system controller (ACSC) automatically opens the High Pressure Valve (HPV).
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How many igniters are installed on each engine?
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Two. IGN-A and IGN-B.
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What are the required parameters before fuel is introduced during a ground engine start?
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20% or greater N2. ITT < 120 C. |
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What is the air pressure requirement provided by the operating engine to initiate a cross bleed start?
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42 PSI to a maximum of 80% N2.
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When will the APR arm on takeoff?
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Engine speed within 8% of scheduled takeoff power, normal or flex.
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When will the APR system activate?
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Thrust levers in TOGA normal or Flex thrust scheduled and N1's differ by 15% or greater. Or when thrust levers are set in the MAX POWER detent. |
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What occurs when the APR system activates?
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FADEC commands an N1 speed increase dependent on thrust lever position.
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What indication will we have of APR activation?
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Green APR icon on operable engine N1 gauge.
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If engine fails during a go-around, will the APR system activate?
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Yes.
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What is used to deploy and stow the thrust reversers?
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Hydraulics. Left reverser uses hydraulic system #1 and Right reverser uses hydraulic system #2.
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How are the thrust reversers deployed?
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Thrust levers must be at idle. The reverse thrust levers are raised by engaging the thrust reverse release triggers. A solenoid lock stops reverse thrust lever movement while the reversers deploy. Once deployed, the lock releases and N1 may be increased by raising the reverse thrust levers
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What is occurring during thrust reverser deployment?
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The translating cowls move aft. The bypass air is redirected through cascade vanes which redirect air forward.
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What indications will be seen with normal thrust reverser deployment?
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Green REV icon on N1 gauges.
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When do thrust reversers need to be stowed or at idle?
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CRJ 900 - 60 kts. CRJ 700 - 75 kts. |
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What happens when a thrust reverser inadvertently deploys?
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FADEC commands reverser to close and thrust set to idle on affected engine.
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What are the indications on an inadvertent thrust reverser deployment?
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Amber REV icon on N1 gauge. REV UNLOCKED caution message.
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What is the normal source for engine starts?
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APU or cross-bleed if doing a single engine taxi.
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What source is used if the APU is INOP?
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Ground air cart or bottle attached to the high pressure air ground connection to start one engine. A cross-bleed start is then used to start the other engine after clearing it with ground control.
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Where is the high pressure air ground connection located?
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Under the left engine nacelle.
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When will the starter cutout during an engine start?
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50% N2.
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What are the engine starter cranking limits?
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1st and 2nd attempt - 90 sec on 10 sec off. 3rd thru 5th attempt - 30 sec on 5 min off. |
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What are the Dry Motoring limits?
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1st attempt - 90 sec on 5 min off. 2nd thru 5th attempt - 30 sec on 5 min off. |
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What are the APU Starter limits?
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No more than three start attempts in one hour. 2 min delay required between start attempts.
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Min oil temperature for start?
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-40 C
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Max continuous oil temperature?
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155 C
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Max permissible oil temperature?
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163 C (15 minutes max)
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Max oil Consumption?
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0.05 gallons/hr |
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Where do we check the oil quantity?
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On the EICAS menu page.
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When should the oil capacity be checked?
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3 minutes to 2 hours after shutdown.
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When should the engine oil level be replenished?
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15 minutes to 2 hours after shutdown.
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Max refill without dry motoring?
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2 quarts.
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How is the oil cooled?
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Fuel/oil heat exchanger
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What is the total quantity of the engine oil tanks?
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7.2 quarts.
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How is the fuel moved from the center tank to the main tanks?
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Transfer ejectors.
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How is the fuel moved from the main tank to the collector tanks?
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Scavenge ejectors (gravity line used as a backup)
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How is the fuel moved from the collector tanks to the engine driven high pressure fuel pump?
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Main ejectors (backed up by boost pumps)
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What is the function of the electric boost pumps?
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To provide initial fuel for engine start and to back-up the main ejectors.
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What is the flight deck indication of a high pressure fuel pump failure?
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Engine flameout.
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What is the maximum fuel imbalance?
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300 lbs. for takeoff 800 lbs. for all other phases.
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When will the fuel system automatically begin transferring fuel?
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200 lb. fuel imbalance.
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When are the boost pumps automatically energized?
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Low pressure from the main ejectors. (if the pumps are armed)
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Where is the high pressure fuel pump located?
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N2 accessory gearbox.
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Where is the bulk fuel temperature taken?
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Right main tank.
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What is the Minimum Bulk Fuel Temp for takeoff (Jet A)?
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-30 C
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What is the Minimum Bulk Fuel Temp during flight (Jet A)?
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above -40 C
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How is engine fuel heated?
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Fuel/oil heat exchanger.
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What is the minimum engine fuel temperature for takeoff?
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+5 C
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What is the takeoff limitation if the center tank has > 500 lbs. of fuel?
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Each main tank must have 4400lbs.
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Which bus powers the refuel/defuel panel and refuel/defuel SOV's?
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APU Battery Direct Bus.
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Where is the refuel/defuel panel located?
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The fuselage forward of the right wing.
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Where is the single point adapter located?
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Right wing root.
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Normal pressure differential is?
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8.5 psi.
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Max pressure differential is?
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8.7 psi.
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Max pressure differential during taxi, takeoff and landing?
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0.1 psi.
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Max negative pressure differential?
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-0.5 psi.
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During single PACK operation, what is max altitude?
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CRJ 900 - FL250 CRJ 700 - FL310 |
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What does the DISPLAY COOL or ARINC COOL Caution message mean?
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Low airflow behind screens or within the avionics rack.
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How many pressurization controllers are installed on the CRJ 900?
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2, PC1 and PC2
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When do the pressurization controllers swap?
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Weight on wheels plus 3 minutes or if one PC fails the redundant controller takes over.
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When operating in the auto mode what is the cabin rate of climb and descent?
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500 fpm climb 300 fpm descent.
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When operating in the manual mode what range is controlled by the manual rate knob?
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50 fpm to 3000 fpm +/- 1000 fpm.
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When will the primary page indicate a CABIN ALT Caution message?
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Cabin altitude between 8,500 and 10,000 ft.
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When will the primary page indicate a CABIN ALT Warning message?
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Cabin altitude >10,000 ft.
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When will CPAM automatically deploy the passenger oxygen masks?
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Cabin altitude >14,000 ft.
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When will CPAM turn on the NO SMOKING?FASTEN SEATBELT signs?
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Cabin altitude >10,000 ft. (with switches in the auto position) |
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Can we carry live animals in the cargo compartment on the CRJ 900?
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Yes. Aft cargo compartment only.
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What causes the fault portion of a PACK switchlight to illuminate?
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Over pressure or over temperature condition.
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What causes the fault portion of the PRESS CONT switchlight to illuminate?
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Both pressurization controllers have failed.
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What is the source of heating for wing and cowl anti ice?
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6th or 10th stage bleed air.
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When is cowl anti-ice required to be on during ground operations?
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OAT < = 10 C in visible moisture (fog with visibility 1sm or less, rain, snow, sleet, ice crystals). OAT < = 10 C on contaminated ramps, taxiways or runways. |
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When is cowl anti-ice required to be ON during flight?
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TAT < = 10 C in visible moisture (such as rain, snow, sleet, or ice crystals, (except when SAT is < = -40 C) or when ICE is annunciated. |
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When is wing anti-ice required to be on during ground operations?
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OAT < = 5C in visible moisture (fog with visibility 1sm or less, rain, snow, sleet, ice crystals). OAT < = 5C on contaminated runways. Note : If type II, III, or IV deicing fluid has been applied, select wing anti-ice ON just prior to thrust increase for takeoff. |
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When is wing anti-ice required to be ON during flight operations?
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TAT < = 10 C in visible moisture with airspeed < 230 KIAS (except when SAT is < = -40 C) or when ICE is annunciated. |
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What is a good ice detector test indication?
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ICE caution message. The ICE switch light Illuminated. ADS HEAT TEST OK advisory message. |
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What is the purpose of the Wing A/I cross bleed switch?
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To allow bleed air from one engine to anti-ice the opposite wing. |
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What occurs with windshield heat on LOW?
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All 4 a panels are heated to 24 C
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What occurs with windshield heat on HIGH?
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Side windows are heated to 24C and both windshields are heated to 41C.
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How many fire detection loops are installed on each engine?
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Two dual loops mounted in parallel.
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How many firex bottles are available for an engine fire?
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Two |
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What type on Halon is in the engine firex bottles?
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Halon 1301pressurized with dry nitrogen.
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How is an engine fire detected by the crew?
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Appropriate ENG FIRE PUSH switch-light illuminates. Fire bell sounds and EICAS warning message. |
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What occurs when the ENG FIRE PUSH switchlight is pushed?
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Fuel SOV closes. HYD SOV closes. Bleed air SOV's close. Generator is de-energized and the appropriate squibs are armed. |
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Can we blow both bottles into one engine if necessary? |
Yes |
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How many fire detection loops are inside the APU containment case? |
Two dual loops mounted in parallel. |
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How is an in flight APU fire detected by the crew? |
APU FIRE PUSH switch-light illuminates, fire bell sounds, and an APU warning message on EICAS. |
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How many firex bottles are available for an APU fire? |
One |
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What type of extinguishing agent is used in the APU firex bottle? |
Halon 1301 pressurized with dry nitrogen. |
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What happens during an unattended APU fire on the ground? |
APU ECU shuts down the APU 5 seconds later the APU bottle will discharge automatically. |
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What occurs during APU fire in flight? |
The APU ECU shuts down the APU. The bottle does not discharge automatically, the crew must discharge the bottle. |
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How many smoke detectors are there in the aft cargo compartment? |
Two |
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How many smoke detectors are there in the in the fwd cargo compartment? |
Three |
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What are the flight deck indications of cargo smoke. |
Triple chime. Master warning flashers. "SMOKE" aural. SMOKE AFT CARGO warning message or SMOKE FWD CARGO warning message. Either FWD or AFT CARGO SMOKE PUSH switch lights illuminate. |
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How many firex bottles are there for cargo smoke? |
Two. One is a slow metered standard bottle that should last approximately 60 minutes and the other is a quick discharge bottle. |
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How many smoke detectors are located in the lavatories? |
One in the fwd and one in the aft. |
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What indication do we have for smoke in the lavatory? |
Triple chime. Master warning flashers. SMOKE FWD LAV or SMOKE AFT LAV warning message. |
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What protection do we have for a lavatory waste compartment fire? |
A firex bottle with heat sensitive capsules that will melt to discharge Halon 1301 directly into the waste compartment. |
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Where are the TRU's located? |
Nose compartment. |
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The Main Battery is rated to? |
17 ampere hour/24 volts. |
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The APU battery is rated to? |
43 ampere hour/24 volts. |
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How many generators are installed? |
Four. 2 engine generators, 1 APU Generator, and 1 ADG. |
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What is the function of the 4 TRU's? |
To convert 115 Volts AC to 28 volts DC. |
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How are the TRU's cooled? |
Individual fans. |
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Which busses are powered when the Battery Master switch is selected on? |
Main battery direct bus. APU battery direct bus. DC battery bus. |
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If the main busses are powered are the essential busses automatically powered? |
Yes |
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Is there an on/off switch for the TRU's? |
No. They are automatically powered when the AC busses are powered. |
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What controls the DC contactors? |
The DC Power Centers (DCPC) automatically control DC tie operation. |
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What indication will we get with a waste compartment fire? |
None, unless it generates enough smoke to set off a smoke detector. |
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When will the Air Driven Generator (ADG) automatically deploy? |
With complete loss of A/C power. |
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Location of Main Battery? |
Nose compartment. |
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Location of APU Battery? |
AFT equipment bay. |
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Max Engine Generator load? |
40 KVA |
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Max APU Generator load? |
40 KVA |
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Max Transformer Rectifier Unit (TRU) load? |
120 amps |
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Max permissible time for ground operations with battery power only? |
5 minutes. |
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What is the reason for ground operations battery limitation? |
To prevent ED1 and ED2 from overheating. (fans are AC powered) |
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How many TRU's are installed in the CRJ 900? |
4 |
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When is "Continuous Ignition" required to be ""ON"? |
1. Flight near thunderstorms 2. Moderate of greater turbulence. 3. Moderate or greater rain. 4. Take-off/Landing on Contaminated runways. 5. After De-icing/Anti-icing. |
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What are the fuel quantities for pressure refueling? |
Total 19,594 Mains 7,492 Center 4610 |
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What are the fuel quantities for gravity refueling? |
Total 14,810 Mains 7405 Center. N/A |
