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GoJet CRJ550 Oral Exam Practice, GoJet
Immediate Action Items, GoJet CRJ550/700
Limitations Questions with Correct Answers |
Updated (100% Correct Answers)
What purpose do the AUTO XFER switches serve on the electrical
panel? Answer: Used to disable automatic transfer of associated
IDG. If FAIL is illuminated there is a fault preventing autotransfer
A FAULT light on the guarded IDG button indicates what? Answer:
IDG fault due to a HOT-LOP situation
Why would an IDG automatically disconnect? Answer: Over-torque
or over-temp scenario
Will an IDG automatically disconnect when there is low oil pressure?
Answer: No - there must be a high oil temperature or over torque
for it to automatically disconnect
On the electrical EICAS page an AMBER readout of the generator
output indicates what? Answer: Generator overload
On the electrical EICAS page you see one generator output with half
intensity magenta numbers. What does that mean? Answer: There is
insufficient data being provided
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If you were to see amber dashes on the EICAS electrical page in
place of the generator output, what would that mean? Answer: The
data being provided is invalid and thus has been removed.
What is the voltage, phase, and frequency of the IDG's? Answer:
115v, 3 phase, 400hz
Why is the ADG bus not shown on the EICAS electrical page
normally? Answer: It will only display when the ADG is deployed
and producing power
The EICAS synoptic page has the word DISC next to one of the
IDG's. What does this mean? Answer: The IDG has been manually or
automatically disconnected. What? Did you think it meant you were
gonna play a sick game of frisbee golf? You basic bitch.
AUTO XFER OFF in white vs. amber would mean what on the EICAS
electrical page? Answer: If white the AUTO XFER switch was
selected off by the pilot, if in amber the automatic transfer function
has failed.
Voltage output of an IDG turns WHITE when what parameters are
exceeded? Answer: Less than 108v or more than 130v
You see SERVICE CONFIGURATION on the AC electrical page, what
does this mean? Answer: External AC power is hooked up and has
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been selected from the external service panel. ONLY the AC service
bus will be powered.
What would have to happen to get the caution EICAS message
GEN1(2) OVLD? Answer: An IDG exceeded 40kVa.
What would an IDG1 amber caution message tell you? Answer: A
HOT/LOP situation has occured on IDG1
If the red EMER PWR ONLY warning presents on the EICAS, what
has happened? Answer: Indicates the ADG has deployed
You see a white ADG FAIL status message, what does this tell you?
Answer: The GCU of the ADG has failed. Probably shouldn't have
had your 550 serviced at Jiffy Lube dummy....
Name a few items on the AC Service Bus Answer: Water system,
toilet, APU charger, cabin lighting, logo lights
What does the ADG power? Answer: AC ESS Bus, Hydraulic pump
3B, Stab Trim channel 2, slats and flaps at half speed
What protects the ADG from frost or ice accumulation in flight while
stowed? Answer: An internal heater that comes on when the nose
gear is retracted
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, 4
After an ADG deployment you get the APU running. What must you
do to connect the APU to the electrical system? Answer: Press the
PWR TXFR OVERRIDE switch on the ADG control panel
What is the purpose of the UNIT switch on the ADG panel? Answer:
It tests the auto-deploy system of the ADG
Why are most aircraft systems DC powered when the aircraft
produces AC power? Answer: AC power is more efficient to produce
because of lighter and smaller components, but batteries only use
DC. In an emergency with only battery power available systems
must utilize DC power in order to function. DC power often is more
efficient to transmit because of lower voltages.
How many batteries does the aircraft have? Answer: Two nickel-
cadmium batteries rated at 43amps for the APU battery and 17amps
for the Main battery
What controls DC power distribution? Answer: Two DCPC's
Which busses are hot busses? Answer: Main battery direct bus, APU
battery direct bus, and the emergency bus
What does it mean when a bus is hot? Answer: It is always
powered, regardless of aircraft state.
Why is the DC service switch on the terminating checklist? Answer:
It is powered by the DC service bus from the APU battery direct bus
© 2025 All rights reserved
GoJet CRJ550 Oral Exam Practice, GoJet
Immediate Action Items, GoJet CRJ550/700
Limitations Questions with Correct Answers |
Updated (100% Correct Answers)
What purpose do the AUTO XFER switches serve on the electrical
panel? Answer: Used to disable automatic transfer of associated
IDG. If FAIL is illuminated there is a fault preventing autotransfer
A FAULT light on the guarded IDG button indicates what? Answer:
IDG fault due to a HOT-LOP situation
Why would an IDG automatically disconnect? Answer: Over-torque
or over-temp scenario
Will an IDG automatically disconnect when there is low oil pressure?
Answer: No - there must be a high oil temperature or over torque
for it to automatically disconnect
On the electrical EICAS page an AMBER readout of the generator
output indicates what? Answer: Generator overload
On the electrical EICAS page you see one generator output with half
intensity magenta numbers. What does that mean? Answer: There is
insufficient data being provided
© 2025 All rights reserved
,2
If you were to see amber dashes on the EICAS electrical page in
place of the generator output, what would that mean? Answer: The
data being provided is invalid and thus has been removed.
What is the voltage, phase, and frequency of the IDG's? Answer:
115v, 3 phase, 400hz
Why is the ADG bus not shown on the EICAS electrical page
normally? Answer: It will only display when the ADG is deployed
and producing power
The EICAS synoptic page has the word DISC next to one of the
IDG's. What does this mean? Answer: The IDG has been manually or
automatically disconnected. What? Did you think it meant you were
gonna play a sick game of frisbee golf? You basic bitch.
AUTO XFER OFF in white vs. amber would mean what on the EICAS
electrical page? Answer: If white the AUTO XFER switch was
selected off by the pilot, if in amber the automatic transfer function
has failed.
Voltage output of an IDG turns WHITE when what parameters are
exceeded? Answer: Less than 108v or more than 130v
You see SERVICE CONFIGURATION on the AC electrical page, what
does this mean? Answer: External AC power is hooked up and has
© 2025 All rights reserved
,3
been selected from the external service panel. ONLY the AC service
bus will be powered.
What would have to happen to get the caution EICAS message
GEN1(2) OVLD? Answer: An IDG exceeded 40kVa.
What would an IDG1 amber caution message tell you? Answer: A
HOT/LOP situation has occured on IDG1
If the red EMER PWR ONLY warning presents on the EICAS, what
has happened? Answer: Indicates the ADG has deployed
You see a white ADG FAIL status message, what does this tell you?
Answer: The GCU of the ADG has failed. Probably shouldn't have
had your 550 serviced at Jiffy Lube dummy....
Name a few items on the AC Service Bus Answer: Water system,
toilet, APU charger, cabin lighting, logo lights
What does the ADG power? Answer: AC ESS Bus, Hydraulic pump
3B, Stab Trim channel 2, slats and flaps at half speed
What protects the ADG from frost or ice accumulation in flight while
stowed? Answer: An internal heater that comes on when the nose
gear is retracted
© 2025 All rights reserved
, 4
After an ADG deployment you get the APU running. What must you
do to connect the APU to the electrical system? Answer: Press the
PWR TXFR OVERRIDE switch on the ADG control panel
What is the purpose of the UNIT switch on the ADG panel? Answer:
It tests the auto-deploy system of the ADG
Why are most aircraft systems DC powered when the aircraft
produces AC power? Answer: AC power is more efficient to produce
because of lighter and smaller components, but batteries only use
DC. In an emergency with only battery power available systems
must utilize DC power in order to function. DC power often is more
efficient to transmit because of lower voltages.
How many batteries does the aircraft have? Answer: Two nickel-
cadmium batteries rated at 43amps for the APU battery and 17amps
for the Main battery
What controls DC power distribution? Answer: Two DCPC's
Which busses are hot busses? Answer: Main battery direct bus, APU
battery direct bus, and the emergency bus
What does it mean when a bus is hot? Answer: It is always
powered, regardless of aircraft state.
Why is the DC service switch on the terminating checklist? Answer:
It is powered by the DC service bus from the APU battery direct bus
© 2025 All rights reserved
