Systems Flashcards
Aircraft Dimensions
Length Wheel base Tail Height Nose to Main Wheels Wingspan
98' - Length 15' 10" - Wheel base 22' 2" - Tail Height 47' 5" - Nose to Main Wheels 65' 9" - Wingspan
Which flight controls are:
- Mechanical
- Hydraulic
- Electrical?
Mechanical: Elevator
Hydraulic: Aileron, Rudder, Spoilers
Electrical: Flaps
How many pax does E145 carry?
50
At what altitude does PAX O2 deploy?
How long will oxygen flow?
14000 ft cabin alt
About 12 minutes (can’t be turned off)
The conditioned air to the cockpit is mainly provided by the _______ pack.
Left
The conditioned air to the cabin is provided mainly by the ______ pack.
Right
What does pneumatic system provides high temp compress air for?
- Ice protection
- Air conditioning
- Pressurization
- Engine Starting
What may power the pneumatic system?
- Engine bleed air
- APU bleed air
- External pneumatic source
What pneumatic system does APU use?
What is APU normally used for?
Left pneumatic system
Air conditioning and engine starting on the ground
Flight Controls
What does the Yaw Damper do?
- Protects against Dutch Roll
2. Helps turn coordination
Electrical
What supplies power to the DC Bus?
- 4 engine generators
- 1 APU starter/generator
- 2 NiCads
- 1 lead acid backup
Electrical / APU
How long after APU start is APU Generator power available?
95% plus 7 seconds
Electrical
When are Shed DC Buses load shed with SHED BUSES - AUTO?
When < 3 generators are on
AOM 2 p.191
Electrical
With SHED BUSES - OVRD, when will the shed bus contactors manually close to power the SHED DC BUS 1/2?
On the ground with at least one generator operating
AOM 2 p.190
Electrical
On the ground, when are all the DC buses energized?
When at least one of the following conditions occurs:
- At least 3 gens on
- GPU is on and connected to airplane
- At least 1 gen on and SHED BUSES knob - OVRD
(AOM 2 p.190)
Electrical
What do the AVIONICS MASTER buttons do?
They connect (when pressed) or disconnect (when released) the navigation and communication equipment supplied by the avionics switched buses.
Normally pressed in
Electrical
What does the BACKUP button do?
Connects (pressed) or disconnects (released) the backup battery from the electrical system.
Backup battery powers - BACKUP ESS BUS 1, BACKUP BUS 1, BACKUP BUS 2
Electrical
What does BUS TIES knob do in:
OVRD
AUTO
OFF
OVRD - Bus tie contactors (BTCs) are kept closed regardless of EDL (Elect. Distr. Logic), as long as no overcurrent detected by one of the 5 GCUs
AUTO - Controls the operation of the BTCs according to EDL (normally BTC2 closed - connects CENTRAL DC BUS to DC BUS 2)
OFF - Openes the BTCs regardless of the command from EDL
Electrical
What does AC PWR button do?
Connects/disconnects inverter to/from the system
Powerplant
Where is the bleed air from the compressor tapped?
Which is higher pressure?
9th and 14th stages
14 stage is the higher pressure supply, and is automatically delivered when the 9th stage pressure or temperature are not sufficient.
Powerplant
What is the AGB mechanically connected to?
Provides mechanical power to drive which accessories?
The high pressure N2 spool
Airplane Accessories:
- 1 Hydraulic Pump
- 2 Electric Generators
- 1 Air Turbine Starter (Pneumatic Starter)
Engine Accessories:
- 1 Fuel Pump and Metering Unit (FPMU),
- 1 Permanent Magnet Alternator (PMA),
- 1 Oil Pump
Powerplant
How many FADEC does each engine have?
How many operate at a time?
What happens if active FADEC fails?
Is a FADEC required for the engine to operate?
2
1 FADEC is active at a time
if a failure is detected, automatic switching to the other FADEC will occur.
Yes, a FADEC is required for the engine to operate.
Powerplant
What can provide pneumatic air for engine starting?
- APU
- ground air supply
- cross bleed from the opposite engine
What do the engine EXTG handles do when pulled?
When rotated?
When pulled, closes the following shutoff valves:
- fuel
- hydraulic
- bleed air
- engine air inlet ice protection
Rotating handle counterclockwise or clockwise will discharge bottle A or B into associated engine
Successful Fire Detection System Test Button
What happens if you press for more than 10 seconds?
Hold button for at least 2 seconds and observe the following:
- EICAS msgs
- APU FIRE
- ENG 1-2 FIRE
- BAGG SMOKE
- APU FIREDET FAIL
- E1-2 FIREDET FAIL - Fire handles illuminate
- Baggage Fire exting. bttn
- Warning and Caution lights
- Aural warnings and bells
If press for more than 10 seconds, APU shuts down on the ground. Should wait at least 6 seconds between presses of the bttn.
Hydraulics / Flight Controls
What happens to flight controls during a dual hydraulic failure?
What precaution should you take?
Rudder and Ailerons revert to mechanical backup
Slow aircraft to below 250 KIAS to lessen control forces
Flight Controls
If you disconnect ailerons or elevators in flight, can they be reset in flight?
No, they can only be reset on the ground
Flight Instruments
What does Pitot/Static 3 supply total air pressure to?
- Standby instruments (IAS, ALT)
2. CPAM (Cabin Pressure Aquisition Module)
Flight Instruments
How many ADC are there? What sensors does each use?
Two sensors
ADC1:
- Pitot tube 1
- Static 1 and 4
ADC2:
- Pitot tube 2
- Static 2 and 3