GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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
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
,GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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 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....
,GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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
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
, GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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 and thus is hot, so if left on after powering down the plane you run the
risk of killing the battery. Nice job putz.
In a complete loss of AC power what happens to keep the DC essential bus powered? - (answer)The ESS
TIE will close to connect DC ESS bus to the battery bus for emergency power.
If TRU 1 OR 2 fail what tie closes? - (answer)The MAIN TIE will close to connect DC Bus 1 and 2. The
UTILITY Bus is shed
If TRU 1 AND 2 fail (or both ESS TRU's) what tie closes? - (answer)The CROSS TIE
What are you actually doing when you turn the battery master on? - (answer)Becoming the pilot god
you always knew you were. Kidding, you fly a regional jet get over yourself. You are connecting the APU
and Main battery direct busses to the battery bus.
When will a TRU load indication on the DC electrical page turn amber? - (answer)When it exceeds
120amps (120.7 actually but it only shows whole numbers)
What voltage do the TRU's put out? - (answer)28v DC
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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
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
,GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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 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....
,GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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
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
, GoJet CRJ550 & CRJ550/700 Oral Exam Questions & Answers | Latest
Already Graded A+ |Questions with Correct Answers 2026 latest update!!
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 and thus is hot, so if left on after powering down the plane you run the
risk of killing the battery. Nice job putz.
In a complete loss of AC power what happens to keep the DC essential bus powered? - (answer)The ESS
TIE will close to connect DC ESS bus to the battery bus for emergency power.
If TRU 1 OR 2 fail what tie closes? - (answer)The MAIN TIE will close to connect DC Bus 1 and 2. The
UTILITY Bus is shed
If TRU 1 AND 2 fail (or both ESS TRU's) what tie closes? - (answer)The CROSS TIE
What are you actually doing when you turn the battery master on? - (answer)Becoming the pilot god
you always knew you were. Kidding, you fly a regional jet get over yourself. You are connecting the APU
and Main battery direct busses to the battery bus.
When will a TRU load indication on the DC electrical page turn amber? - (answer)When it exceeds
120amps (120.7 actually but it only shows whole numbers)
What voltage do the TRU's put out? - (answer)28v DC
