Systems Test Flashcards
The APU is located in the:
Aft tailcone
Maximum APU start Altitude
37000
What is the Bleed air source for the CRJ 900 air-conditioning system
Sixth or 10th stage
How is the air conditioning pack pressure controlled when the engines are supplying bleed air?
Pack valves
Selecting the ram air switch open supplies ram air to?
Mixing valves
What does the standby selection of the display fan control panel provide
De-energizes the flight and ground fans
How is the outflow valve operated
Electrically
How is the avionics bay exhaust air control
Ground valve
How many outflow valves are installed
One
At flight level 410 the engine driven generators are rated at
40KVA
The CRJ 900 TRU distribution system consists of
4 TRU’s rated at 120 amps each
The DC tie contactors
Are controlled automatically
During single generator operations the following buses are loaded shed
None
The DC service bus is powered by
DC bus two and APU battery direct buss
How many circuit breaker panels are located on the flight deck
2
From the list below to identify the aircraft systems not protected by a dual loop fire overheat system
Jet pipes
The engine low-pressure turbine…
… Is protected by overheat detection system only.
How is the fire detection and extinguishing system tested?
It is pilot selected
Flutter dampers are provided on…
Ailerons only
Maximum 45 slats/flaps Vfe speed is:
170kts
The MPS are powered by how many hydraulic systems?
2
Lift dumping is accomplished by extending:
2 MFS panels per wing
There are two slat positions. The intermediate positions of 20° is set when the…
Slats/flaps lever is selected to 1 & 8
When the emergency flap switch is selected the…
Slats/flaps move to 25° and 20°
The rudder travel limiter restricts rudder travel
In-flight only
The standby I S I is…
An integrated unit
The enhanced flight director provides optimized pitch reference…
When the TO mode is active
When the aircraft is pressure refueled, the total usable fuel capacity of the 900 is:
19,594 lbs.
The APU fuel feed system uses…
A dedicated APU fuel pump
The APU on the CRJ 900 gets fuel from…
The left wing tank via the left collector tank
The bulk fuel temperature for CRJ900 is measured in the…
Right wing tank
The purpose of the hydraulic shut off valve switch light is…
To stop the flow of hydraulic fluid from the engine driven pump 1A or 2A
What is the source of the bleed air used for anti-icing
6th or 10th stage bleed air
What does the DET TEST switch test when pressed
Ice detectors and air data probes and sensor heaters
How is a cowl duct leak detected
By a pressure transducer
What is the maximum landing gear retraction and extensions speeds
200 and 220 KIAS
The forward nose gear doors…
Remain open when the nose gear is extended.
Bleed air is taken from what stages of the engine compressor?
Sixth and 10th stage
How is the bleed source selection controlled when in the auto mode?
Automatically by the ACSC
How is the interlock protection provided for the APU
ACSC Control logic provides two levels of protection
What is the purpose of the high-pressure valves?
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
How is the bleed leak detection system monitored?
Continuously when powered
CF 34 – 8C5 take off and APR thrust values are
13560 and 14750
Engine N1 speed governing is a function of…
FADEC
N1 & N2 Synchronization is available during…
Cruise flight
Flex N1 Is computed by the…
FMS computer
Prior to take off normal rated take off N1thrust is displayed…
Automatically
cF34 – 8C5 thrust reverser system is operated by…
Hydraulic pressure
The automatic performance reserve system is armed when…
when the engine speed is within 8% N1 RPM of schedule to take off power
FADEC Will automatically abort an engine start for all malfunctions detected. True or false?
False
Engine oil quantity monitoring and servicing is…
Via the EICAS Menu page and an Oil replenishment system in the aft equipment bay
When an engine failure is detected, APR thrust occurs when…
Thrust levers are in the TOGA detent or normal, flex or go around power is programmed
CRJ 900 thrust Lever quadrant is equipped with detents of
All of the above
