CRJ 200 Systems Flashcards
Ways to Disconnect AP
SYS 4-20
- Red AP/SP DISC switch on control wheel
- Operating STAB trim
- AP ENG switch on FCP
- Lowering the AP DISC
switch-bar on the FCP - TOGA switch on thrust levers
- STAB TRIM DISC on yoke
- Yaw damper DISC pusbutton
Engine Intake
Danger Area
Idle thrust: 12 ft
Max thrust: 25 ft
(SYS 2-18)
Engine Exhaust
Danger Area
Idle thrust: 100 ft
Max thrust: 170 ft
APU Exhaust
Danger Area
15 ft
CRJ-200 Wingspan
69’ 6”
CRJ-200 Height
20’ 8”
CRJ-200 Length
87’ 10”
Minimum Pavement Width for 180 turn:
75 feet
DCU:
Data Concentrator Unit:
Provides information to EICAS. Generates visual and aural warnings.
Names of two middle CRTs?
ED1 and ED2.
Displays EICAS, in normal config.
Primary Page on ED1 and Status Page on ED2.
How to choose what is displayed on MFD CRT?
DRP
(Display Reversionary Panel)
PFD, NORM or EICAS.
How to choose where EICAS information is displayed?
Source Selector Panel on center pedestal.
ED1, STBY or ED2.
Warning Message:
Red, displayed on Primary Page (ED1).
Most urgent, requires immediate corrective action.
Caution Message:
Amber, displayed on Primary Page (ED1).
Less urgent than warnings, requires prompt corrective action.
Advisory Message:
Green, displayed on Status Page (ED2).
Shows a safe condition exists.
Status Message:
White, displayed on Status Page (ED2)
Shows an abnormal situation or low priority failure has occurred.
What happens if a CRT fails?
If ED1, primary page will automatically revert to ED2. If either fails, you must use Source Selector Panel set to operating display to regain control of ECP. All failures can be arranged using DCP to replace an MFD with more important info (PFD or ED2).
Pressing Master Warning does what?
Resets light for future warnings and silences aural warnings except:
- Stall Warbler
- GPWS/TCAS
- Overspeed/Flaps Clacker
- Stab Trim Clacker
- AP Disconnect
- Config Warnings/Gear Horn
Pressing Master Caution does what?
Resets light and silences aural warnings except:
- GPWS/TCAS
- Altitude Alerter
How are CAS messages ordered?
- Order of importance (type of message)
AND
- Order of occurrence.
What does CAS button do on ECP?
Cycles through multiple pages of messages and can “box” caution messages if both main generators are operating and online. If a new caution message comes up, it will not unbox.
What does STAT button do on ECP?
Cycles through multiple pages of messages and can “box” status messages at all times. If a new one appears, it will unbox.
What are CAS Inhibits?
During Initial Takeoff, Final Takeoff, and Landing, the DCUs inhibit certain warnings and cautions so to not distract pilots. As soon as phase ends, the warnings/cautions will appear.
What does MENU page do?
Used when FMS is INOP:
- Resets Fuel Used
- Set N1 carats
- Set flight number
Which buttons still work when ECP is INOP?
PRI, STAT, CAS, STEP.
What do DCU 1 and DCU 2 switch lights do?
Disables and silences aural warnings of faulty DCU.
What is PSEU?
Proximity Sensing Electronic Unit.
Senses positions of doors and displays them on DOORS synoptic page.
Senses weight on wheels and other conditions
Name all doors and
their type:
Passenger Door:
Non-plug type
Galley Service Door:
Semi-plug type
Avionics Bay Service Door:
Plug type
Cargo Bay Door:
Plug type
Over wing emergency exits:
Plug type
Not monitored by PSEU:
Cockpit escape hatch:
Plug type
Aft Equipment Bay Door:
Non-plug type
Door vent flap on passenger door:
Closes/opens with interior or exterior handle.
Dumps pressure when handle is moved.
Passenger door on Doors synoptic page:
Red: two or more sensors indicate door is open.
Amber (STOW/OUTER HNDL): outer or stow handle is not stowed.
Amber (LATCH): passenger door is unlatched.
DOORS synoptic page:
Red:
Pax door is open
Amber:
Door is unsafe
Green:
Door is safe
Half magenta:
Door position unknown
Aircraft/engine models:
CL600-2B19
GE CF34-3B1
How much engine thrust?
Normal thrust:
8729 LBS
APR thrust:
9220 LBS
What is checklist sequence in emergency?
- Immediate action items
- Emergency checklists
- Abnormal checklists
- Normal checklists
Takeoff config warning:
- Autopilot engaged
- Flaps not in
takeoff position - Spoilers not down
- Parking brake set
- Rudder, aileron, or stab trim
out of green range
(SYS 13-40)
When is N1 VIB shown on EICAS?
- When both engines 55% N2 + 2 sec
- Single engine in flight
(SYS 22-32)
Which lights will turn on FDR?
Strobes or beacon
or weight off wheels
What is max flight deck oxygen pressure?
2800 PSI
Will blow out the green oxygen blowout plug
on right side of fuselage.
What is normal flight deck oxygen pressure and minimum on EICAS?
Normal:
1850 PSI
EICAS O2 turns amber:
1410 PSI
Passenger oxygen:
Deploys at 14,000’
cabin altitude.
O2 generators provide
13 minutes of oxygen
Portable oxygen bottles:
2 of them in:
first overhead bin on right side, or forward wardrobe
used by FA for first aid or emergencies.
Where is APU located?
Titanium enclosure in
aft equipment bay.
What is “brain” of APU?
ECU
Electronic Control Unit
How does APU get fuel?
FCU (Fuel Control Unit) gets fuel from APU/XFLOW pump from both left and right main tanks.
During negative g conditions or APU/XFLOW pump failure, right engine fuel manifold fuels APU.
What are APU door positions?
OPEN, MID, CLOSED.
Controlled by ECU.
How does the APU avoid overtemping?
ECU controls bleed air output by modulating the LCV (load control valve).
What happens when PWR/FUEL switch light is pressed?
- Pump on (XFLOW/APU)
- Door opens
- IN BITE
- Gauges appear on ED2
- SOV opens
(SYS 20-7)
APU Start sequence:
Start/Stop is pushed
At 50% RPM:
Starter cuts out
At 95% + 4 sec:
Green AVAIL light on
What does green “AVAIL” light on APU mean?
APU is ready to
supply bleed air
What is primary function of the APU?
AC Electrical Power.
How does APU shutdown?
The ECU sends a simulated 107% (Overspeed) signal,
which protectively shuts down APU.
How to shutdown APU?
- START/STOP Switch
- PWR/FUEL Switch
- APU FIRE PUSH switch
- APU SHUTOFF switch on
external services panel - APU EMER STOP switch in
Aft Equipment Bay
What will emergency shutdown the APU in the air?
- Overspeed
- DC power loss
- ECU failure
- Loss of speed signal
- Emergency fire shutdown
When do APU gauges appear on status page?
From ECU power up (PWR/FUEL switch) to 60 seconds after shutdown and ECU power down.
What does red APU on fuel synoptic page mean?
APU Fire with SOV failed at open or mid.
Minimum battery voltage to start APU.
22 V DC.
How is APU cooled?
Mechanical cooling fan attached to gearbox draws air in.
How does system handle APU Fire in flight?
ECU:
- Closes fuel SOV
- Closes bleed air SOV
- APU shuts down
Fire bottle must be discharged manually
How does system handle APU fire on ground?
ECU:
- Closes fuel SOV
- Closes bleed air SOV
- APU shuts down
- 5 sec later, fire bottle discharges
- Horn sounds in Aft Equipment Bay
What is a GCU?
Generator Control Unit, monitors all generators.
What kind of power do generators provide?
115 VAC,400 Hz,3 phase
IDG:
30 KVA to FL350
25 KVA Above FL350-FL370
APU: 30 KVA to FL370
ADG: 15 KVA
What is IDG monitored for and what will happen?
HOTLOP (high oil temp, low oil pressure)…will get fault light on overhead.
Severe oil overtemp or overtorque automatically disconnects IDG
How can ADG be deployed?
- Automatically when complete AC power loss
- Manually by pulling
ADG manual release handle
How can you override ADG?
If a generator comes back online, ADG can be overridden by PWR TXFR OVERRIDE switch.
What does green AVAIL light on external AC switch light mean?
Power is connected and is of proper phase, voltage, and frequency.
3 phase, 115VAC, 400 Hz