Written Flashcards
Engine oil quantity monitoring and servicing is …
Via the EICAS menu page and oil replenishment system in the aft equipment bay
How is the avionics bay exhaust air controlled on the crj900
Ground valve
How is the outflow valve operated
Electrically
How many outflow valves are installed on the crj900
1
At FL 410 the engine driven generators are rated at
40 KVA
Crj900 tru distribution system consists of
4 TRUs rated at 120 amps each
Engine oil quantity monitoring and servicing is
Via the EICAS menu page and oil replenishment system in the aft equipment bay
The DC tie connectors are
Controlled automatically
DCCU
During single generator operations the following buses are load shed
No buses are load shed
How many circuit breaker panels are located on the flight deck
2
From the list below identify the aircraft systems not protected by a dual loop fire/ overheat
Cargo bay
The engine low pressure turbine
Is protected by overheat detection system only
How is the fire detection and extinguishing FIREX system tested
Pilot selected
Maximum 45 slats/ flaps Vfe speed is
170 knots
How many Hydraulic systems power each MFS multi function spoiler?
1
There are two slat positions. The intermediate position of 20 is set when the
Slats/flaps lever is selected to 1 and 8
When the EMER FLAP switch is selected the…
Slats /flaps move to 25/20
The RTL restricts rudder travel…..
In flight only
The standby ADI is ……
An integrated unit
The enhanced flight director provides optimized pitch reference….
When the TO mode is active
When the aircraft pressure refueled the total usable capacity of the crj900 is…..
19,594 lbs
The APU fuel feed system uses a
Dedicated APU fuel pump
The APU on the CRJ900 gets fuel from..
The left wing tank via the left collector tank
The bulk fuel temperature for the CRJ900 is measured in the
Right wing tank
The purpose of the HYD SOV switch light is …..
Stop the flow of hydraulic fluid to EDP 1A or 2A
What is the source of the bleed air used for anti icing
6th or 10th stage bleed air
What is that DET TEST switch test when pressed
Ice detectors, air data probes and sensor heaters
The maximum landing gear retraction and extension speeds for the CRJ 900 are….
200 kias & 220 kias
The forward nose gear doors
Remain open when the nose gear is extended
Bleed air is taken from which stage of the engine compressor
6th or 10th stages
How is the bleed source selection control when the AUTO mode
Automatically by the ACSC
What is the purpose of the HPV (high pressure valve)?
To provide high pressure 10th stage air as required
On the ground with both engines running and the APU operating what bleed air source is supplying the manifold
APU
CF34-8C5 takeoff and APR thrust values are _____ & ______ ft lbs
13,560 and 14,750
Engine N2 speed governing is a function of ….
FADEC fully automatic digital electronic control
FLEX takeoff N1 thrust is computer by
FMS computer
Prior to takeoff normal rated takeoff N1 thrust is displayed
Automatically
The CF34-8C5 thrust reverser system is operated by
Hydraulic pressure
The Automatic power reserve system APR is armed when…..
When the engine speed is within 8% N1 RPM scheduled takeoff power
Flutter dampeners are provided on
Ailerons only
Lift dumping is accomplished by extending
2 MFS panels per wing
How is the cowl leak detected
Pressure transducer
Maximum APU start altitude
37,000 feet
The APU is located in the
Aircraft tailcone
When is the bleed leak detection system monitored
Continuously when powered
FADEC will automatically abort an engine start for all functions detected
False
Selecting the RAM AIR switch OPEN supplies ram air to
Mixing valve
What is the bleed air source for the CRJ900 air conditioning system
6th and 10th stages
What is the STDBY selection on the DISPLAY FAN control panel provide on the CRJ 900
De-energizes the flight and ground fans
When the engine failure is detected, APR thrust occurs when
A. Thrust levers are in TOGA detent
B. normal, FLEX, or Go-around power is programmed.
The CRj900 thrust lever quadrant is equipped with detects of
All of the above
How is the interlock protection provided for the APU
ACSC control logic provides two levels of protection
During single generator operations the following buses are load shed
No buses are load shed
The RTL rudder travel limiter restricts rudder travel
In flight only
The horizontal stabilizer trim has a range marked on the side of the vertical stabilizer of
+2 to -13
How many volts are required for both batteries to start the engines
22 volts
How many MFS per wing?
2 multi engine spoilers per wing
On the ground how many spoilers produce lift dumping?
4 per wing so 8 total
What is the speed limit with Flaps 20?
220 knots
Enhanced Flight director in takeoff mode 10 degrees
When takeoff mode is active
What lights up when you push the fire switch?
9 lights
How many DC contactors are there for each battery?
2 automatically
What message do you get from pressing the DET switch test button.
ADS HEAT test ok on eicas
Taxiing out with the APU running what supplying bleed air to the packs?
APU
When does FADEC figure out full power for takeoff?
Automatically
What moves the thrust reversers?
hydraulic
How is the bleed source selection controlled in auto mode
Automatically by ACSC
Crj uses what electrical power
115 amps
What Standby ISI……
integrated standby instrument
How is cowl leak detected
Pressure transducer
Max APU starting altitude
37,000
The enhanced flight director provides optimized pitch reference
When the TO mode is active
How is the interlock protection provided for the APU?
ACSC control logic provides two levels of protection
How is the outflow valve operated?
Electrically
Lift dumping is accomplished by extending
2 MFS panels per wing, 2 ground spoilers per wing: total eight
Two safety valves on the aft pressure bulkhead provide
Over and negative pressure relief
Engines may be started using an air source from APU, ground cart, or engine crossbreed
True
What is used to backup the main ejectors?
Two electric boost pumps
Lift dumping is accomplished by extending by extending
2 MFS panels and 2 Ground spoilers
Rudder travel limiter restricts rudder travel
In flight only
The standby ISI is
An integrated unit
The enhanced flight director provides optimized pitch reference
When TO mode is active
Airspeed trend vector is
10 seconds
APU is
43 amp 24 volt
What type ejector pump sends fuel from the center tank to the main tank?
Transfer ejector
Hydraulic motor pumps 1B & 2B will automatically turn ON with an engine failure
False
APU AVAIL switch light means
APU is ready for electrical and/or pneumatic loading
Push Fire switch light
Answer A & C squibs & HYD SOV close
When is the bleed leak detection on
Continuously
How do we test the fire detection system?
Fire switch light test button
When is the bleed air leak detection system monitored
All the time, continuously while powered on the ground.
During engine start, the engine cuts out at
50% N2
During engine start
Answer a & b: 20% N2 and below 120 ITT
When the aircraft engines are not running what holds the parking brake?
Inboard
