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36 Cards in this Set
- Front
- Back
- 3rd side (hint)
Disclaimer: I created this deck for my own personal study. It hasn't been QAd or approved by any airline, aircraft manufacturer, or regulatory agency. |
DYODD! |
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ELEC SD Symbology What does it mean when the boxes around the power buses are Green? |
The bus has normal power. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the boxes around the power buses are Amber OFF? |
The bus does not have power. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the battery symbol's green? |
The battery is discharging normally. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the battery symbol's amber? |
Battery voltage is less than normal OR battery discharge is abnormal. Voltage digits will be boxed and amber |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the battery symbol's white? |
No load on the battery. Load numerics are white in all conditions. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the Transformer Rectifier symbol & text are White? Amber? |
White = Normal ops Amber = TR is failed |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the Generator icon is Green? |
Gen is on. V & f are within limits. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the Generator icon & text is Amber? |
Gen tripped off. V, f, & load current digits are boxed amber if no w/in limits. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the Generator icon is White? |
Engine isn't on OR Gen is turned off. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the External Power icon is white? Green? Blank? |
White = External pwr's available. EXT switch is off or the main external pwr relay is tripped. Green = External pwr's on & supplying power. Blank = Not connected. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the APU icon is White? Green? |
White = APU pwr's available, but the gen's off due to APU GEN sw in OFF or APU pwr relay tripped. Green = APU's pwrd on & supplying pwr. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the APU icon is Amber? Blank? |
Amber = APU's available. APU GEN tripped off. Blank = APU pwr not available. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when the Bus Tie Relay icon is Green? Amber? White? |
Green = Relay's closed. Normal conditions. Amber = Relay's tripped open. White = Relay's opened. Normal condition. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when a Power Relay icon is Green? Amber? White? |
Green = Relay's closed. Normal conditions. Amber = Relay's tripped open. White = Relay's opened. Normal condition. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when a DC Tie Relay is Green? Amber? White? |
Green = Relay's closed. Normal conditions. Amber = Relay's tripped open. White = Relay's opened. Normal condition. |
ELEC 001 Vol 2, 6-10 |
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ELEC SD Symbology What does it mean when schematic flow lines are white? |
Normal powered condition |
ELEC 001 Vol 2, 6-10 |
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With battery switch OFF, what is the battery connected to? |
Battery direct bus only (battery charging not effected) |
ELEC 002 Vol 2, 6-10 |
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With battery switch ON, what is the battery connected to? |
Battery direct bus AND DC transfer bus |
ELEC 002 Vol 2, 6-10 |
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When and how can we test EMER PWR? |
On ground w both engines shut down, move switch from OFF to ARM. A good test's indicated when EMER PWR TEST alert & EMER PWR ON light both go out. |
ELEC 003 Vol 2, 6-10 Vol 2, 6-20 Vol 1, NP-20 |
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When in ARM, when does the EMER PWR supply emergency power? |
Automatically when power loss in the EMER AC or DC bus is detected |
ELEC 003 Vol 2, 6-10 Vol 2, 6-20 Vol 1, NP-20 |
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If external power is available and both pilots leave the flight deck, what should be done? |
EMER PWR selector to OFF |
ELEC 003 Vol 2, 6-10 Vol 2, 6-20 Vol 1, NP-20 |
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What happens when EMER PWR is ON? |
Battery supplies power for AC EMER bus (thru a static inverter) and DC EMER bus |
ELEC 003 Vol 2, 6-10 Vol 2, 6-20 Vol 1, NP-20 |
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Which buses are powered by EMER power? And for how long? |
Battery direct bus DC Transfer bus Emergency AC bus (thru emergency inverter) Emergency DC bus It lasts for approx 60 minutes. |
ELEC 004 Vol 2, 6-10 |
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What happens when the BUS TIE switches are in OPEN? |
Respective generator can't power the tie bus. Can also be used to reset a bus tie lockout on the ground. |
ELEC 005 Vol 2, 6-10 |
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What happens when the BUS TIE switches are in AUTO? |
Generator bus to Tie bus connection is controlled automatically to meet power requirements |
ELEC 005 Vol 2, 6-10 |
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What happens when we move the DC BUS TIE switch to OPEN? |
Open=Opens all 3 DC bus tie relays |
ELEC 005 Vol 2, 6-10 |
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What do the L/R GEN switches do? RESET= OFF= ON= |
RESET= Resets the gen. OFF= Disconnects the generator from its respective bus ON= Allows an operating generator to supply power to its respective bus |
ELEC 007 Vol 2, 6-10 |
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What the APU Power switch ON do? OFF? RESET? |
ON=Allows APU generator to supply power to the tie bus OFF= Disconnects the APU gen from the tie bus RESET= Resets the generator |
ELEC 008 Vol 2, 6-10 |
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What does EXT power switch do in ON position? OFF? |
ON=Connects EXT PWR to tie bus. OFF=Disconnects EXT PWR from the tie bus. |
ELEC 009 Vol 2, 6-10 |
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What's the function of the OFF position of the GND SERVICE ELEC PWR switch? How about the ON position? |
OFF= Neutral position for ground service power. ON= Connects external power to the AC ground service bus & powers the DC ground service bus. EXT power switch is OFF. |
ELEC 010 Vol 2, 6-10 |
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What's does turning the GALLEY PWR switch OFF do? How about ON? |
OFF= Galley power off. ON= Galley power on. |
ELEC 011 Vol 2, 6-10 |
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When may we still see a break in power (despite the NBPT)? |
During transfer from APU to an external source OR if a supplying generator experiences unexpected loss of power (due to flameout, unexpected shutdown, etc.) |
ELEC 012 Vol 2, 6-20 |
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What does No Break Power Transfer (NBPT) do? |
Normally, it ensures that all electrical power source transfers will occur without power interruption. |
ELEC 012 Vol 2, 6-10 |
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What does a green EXT PWR AVAIL mean? |
EXT power connected and within limits |
ELEC 013 Vol 2, 6-20 |
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On the Electrical Panel, the EMER PWR light is what color? The EXT PWR light? All other lights? |
EMER PWR = Amber EXT PWR = Green All other lights = Blue |
ELEC 013 Vol 2, 6-10 |