GOJET AIRLINES CRJ 550 STUDY
GUIDE 2026 STUDY GUIDE
COMPREHENSIVE QUESTIONS
ANSWERS VERIFIED A+
◉ 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
◉ 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....
◉ 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?
GUIDE 2026 STUDY GUIDE
COMPREHENSIVE QUESTIONS
ANSWERS VERIFIED A+
◉ 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
◉ 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....
◉ 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?
