Term
What does this button do?
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Definition
Remeber 4 things (EXTG has 4 letters)
- Sends stop signal to FADEC
- Closes APU SOV in Wing
- Closes Fuel valve on APU
- Discharges APU fire bottle
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Term
| Will the APU auto shutdown when a fire is detected? |
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Definition
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Term
What does this button do?
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Definition
Tests the first detection system.
Should hear Fire bell and should see (Remember 3-4-5):
- 3 lights illuminated (2 fire handles, 1 BAGG EXTG button)
- 4 lights flashing (2 warning, 2 caution)
- 5 Messages (2 warn, 3 caution)
- APU FIRE
- ENG 1(2) FIRE
- BAGG SMOKE
- APU FIRE DET FAIL
- ENG 1(2) FIRE DET FAIL
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Term
When will this button illuminate?
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Definition
| When smoke is detected in the baggage compartment |
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Term
What happens when this button is pushed?
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Definition
- Both bottles discharged (High rate & Metered)
- Baggage compartment fans off
50 minutes of protection |
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Term
| How many smoke detectors are in the baggage compartment? |
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Definition
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Term
| Can the baggage smoke detectors be reset by the pilots? |
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Definition
| No, Maintenance must reset them |
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Term
What happens when this knob is selected OFF?
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Definition
4 things (Remember OFF has 3 letters + 1):
- Sends a stop signal to FADEC
- Closes APU FUEL SOV in Wing
- Closes Fuel valve on APU
- Indications and alarms are disabled
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Term
What happens when this knob is selected ON?
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Definition
4 things (Remember ON has 2 letters x 2):
- FADEC energized
- FADEC performs self-test
- Opens APU FUEL SOV in Wing
- Enables indications and alarms for APU
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Term
What happens when this knob is selected START?
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Definition
| Initiates the start cycle |
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Term
What happens when this button is pushed?
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Definition
2 things:
- Sends stop request to FADEC
- Closes fuel valve on APU
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Term
What happens when this button is pushed?
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Definition
3 things (Remember 3 syllables in button name):
- Sends stop request to FADEC
- Closes APU FUEL SOV in Wing
- Closes fuel valve on APU
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Term
| When is the APU able to provide power? |
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Definition
| 95% rotation speed + 7 seconds |
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Term
| How many APU swing starts are permitted? |
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Definition
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Term
What happens when this knob is selected OFF?
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Definition
Auto-relight is disabled
* Doesn't actually turn off the ignitors |
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Term
What happens when this knob is selected AUTO?
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Definition
Active FADEC controls ignition (A or B)
- 1 ignitor for ground start (14% N2)
- 2 ignitors for air start (10% N2)
- Auto-relight (above 53% N2)
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Term
What happens when this knob is selected ON?
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Definition
| Both ignitors operate continuously |
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Term
When would you select this knob to ON?
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Definition
- First flight of the day
- Cold engine start OR Oil < 5C
- Ext Air or XBLEED start
- Contaminated rwy AND OAT < 10C
- Moderate or greater turbulence
- Heavy precip
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Term
What happens when this knob is selected RESET?
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Definition
| Resets FADEC and clears faults |
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Term
What happens when this knob is selected ALTN?
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Definition
Alternates the FADEC in control
* Switch becomes inop if held for more than 3 seconds |
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Term
What happens when this knob is selected STOP?
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Definition
| Commands FADEC to shut engine down if Thrust Lever is IDLE |
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Term
What happens when this knob is selected RUN?
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Definition
| Allows normal engine operations |
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Term
What happens when this knob is selected START?
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Definition
- Initiates start cycle
- Switches FADEC from the last one that succesfully started the engine
* Switch inop if held for 3 seconds. Can be reset by turning to STOP then reset FADEC |
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Term
What happens if this button is held for more than 10 seconds?
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Definition
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Term
| During an APU start, what does Battery 1 do? |
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Definition
| It provies stable power to sensitive electrical equipment |
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Term
| How long can the APU be run unattended? |
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Definition
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Term
| Describe the basic design of the engine |
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Definition
2 Spool High Bypass Turbofan
- High pressure spool
- 14 stage compressor
- 2 stage turbine
- Low pressure spool
- 1 high bypass fan
- 3 stage turbine
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Term
| What is Compressor Variable Geometry? |
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Definition
| The first 5 inlet vanes are FADEC controlled to maximize compressor efficiency |
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Term
| What moves the inlet guide vanes? |
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Definition
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Term
| What components are driven by the engine accessory gearbox? |
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Definition
- Hydraulic Pump
- Electrical Generators
- ATS (Air Turbine Starter)
- PMA (Primary Magnetic Alternator)
- Oil Pump
- FPMU (Fuel Pump Metering Unit)
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Term
| What does the Permanent Magnet Alternator (PMA) power? |
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Definition
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Term
| When will the FADEC not protect the engine from excessive ITT? |
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Definition
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Term
| What does ATTCS stand for? |
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Definition
| Automatic Takeoff Thrust Control System |
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Term
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Definition
- FADEC receives engine inop signal; or
- Opposite engine thrust level is retarded; or
- Opposite engine does not arm within 2 seconds
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Term
| When should T/O-1 thrust be used for takeoff? |
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Definition
- Windshear
- ATTCS inoperative
- Runway is contaminated
- Performance requires it
- Discretion of the Captain
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Term
| Describe N2 events during a start cycle |
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Definition
10% - PMA powers ignition
14% - FADEC enables ignition
28% - Fuel flows
42%-48% - Possible hung start range
50% - PMA powers FADEC
53% - Start control valvle closes
57% - Ignition OFF, Generators online
64% - Ground Idle |
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