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ABX 767 Systems Oral Prep Questions and Answers 100% Pass
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ABX 767 Systems Oral Prep Questions and Answers 100% Pass When you walk into a cold, dead airplane, what are your first steps towards applying electrical power? - ANSWER-Battery switch ON, STBY PWR Selector to AUTO What buses are now powered? - ANSWER-Hot battery, battery, standby AC, standb...

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  • November 12, 2024
  • 30
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • abx 767 systems oral prep questions and answers 10

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ABX 767 Systems Oral Prep Questions
and Answers 100% Pass

When you walk into a cold, dead airplane,


what are your first steps towards applying electrical power? - ANSWER✔✔-Battery

switch ON,


STBY PWR Selector to AUTO


What buses are now powered? - ANSWER✔✔-Hot battery, battery, standby AC,

standby DC


What do you have now for instruments, communications, and navigation -

ANSWER✔✔-Standby ADI, airspeed, altimeter, and engine instruments, left VHF, left

VOR, center ILS, magnetic compass


If there were an AVAIL light on External Power, what would that tell you? -

ANSWER✔✔-AVAIL means external power has the proper phase and voltage.


What does the AVAIL light allow you to do? - ANSWER✔✔-The ground handling bus

is now powered (EXT AVAIL or APU), the cargo doors and handling system, as well as

the auto refueling system, are also powered and usable. The ground service bus could



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,also be selected over to the ground handling bus(door 1L). Oh yeah, of course the

AVAIL also allows you to select external power ON.


Today, instead of an AVAIL light, you have to use the APU. After completeing your

safety check, you take the APU selector to ON. What do you see? - ANSWER✔✔-A

momentary fault light as the APU valve opens


When you take the APU selector to start what occurs and what is the power source -

ANSWER✔✔-The APU battery provides power the starting


What could FAULT the APU during start - ANSWER✔✔-Overtemp (EGT),

underpressure (oil), or overspeed (N2)


What else has occurred with the APU selector ON and what's the power source for all

this? - ANSWER✔✔-The left forward fuel pump (DC pump if AC not available) starts

up and the APU inlet door opens. The APU Battery powers the APU Starter, the Air

Inlet Door, and control circuitry. The ship's battery is used for fire protection, the APU

Fuel Valve, and the DC Start Pump.


Once power is established, and you've turned on the exterior lights for the walkaround,

you reach up and turn all 3 IRSs to NAV. What do you expect to see and what does it

mean? - ANSWER✔✔-ON DC lights will momentarily illuminate as the system tests the

DC power source, then they will extinguish and the ALIGN lights will illuminate.


Fast forward everything now. There you are flying along FD&H, you get an EICAS

message of R IRS DC FAIL. Sure enough, the R DC FAIL light is illuminated. What
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, happened? Is it a problem? - ANSWER✔✔-DC FAIL simply notifies you that the

associated DC backup (static inverter) has failed, and DC power is lost. As long as AC

power is still available, the IRUs will operate normally.


Okay we're onto the Yaw Damper switches now. You look up and notice both INOP

lights are illuminated. Why is this? Can we now try the test switch on the accessory

panel? - ANSWER✔✔-The yaw dampers (and test switch) require 1 aligned IRS and

respective hydraulic power for system to be tested.


The yaw damper INOP lights extinguish but you notice the L IRS ALIGN light begins

flashing when the C and R ALIGN lights extinguish. What could cause that? What

could cause all 3 ALIGN lights to flash? - ANSWER✔✔-A fault in the Left IRS. If all 3

ALIGN lights had been flashing, it could have been...


1) No present position entered yet


2) the aircraft was moved during the alignment phase


3) significant difference between last location at shut down, and present location

entered.


Next set of switches are the EECs. What is their story? - ANSWER✔✔-The EECs

compute the max limits for thrust by TRIMMING fuel during high power settings and

rapid thrust lever advances.




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