Mesa E175 Oral Exam Study Guide: Mesa E175 Oral
Preparations Exam: Questions & Answers
What is an ICC?
(Ans- An electrical control device which provides power distribution and
protection for electrical loads.
What is an SPDA?
(Ans- An electrical load-mgmt unit powered by the ICC's that distributes electrical
loads to aircraft systems according to distribution logic.
Can the flight crew reset the ICC and SPDA remote electronic CB's?
(Ans-
-ICC CB's can only be reset by Maintenance
-SPDA CB's can be reset bia the MCDU
What is the purpose of the fuel collector box?
(Ans-
-Keeps fuel pumps submerged
-Ensures constant fuel flow to respective engine
How many fuel pumps do we have on the EJET?
(Ans-
-2 eng driven
-2 ejector
,-6 scavenge
-2 AC electric
-1 DC electric
Where are the fuel ejector pumps located?
(Ans- In the collector tanks
Which pumps provide motive flow to the ejector pumps and are the primary fuel
source to the engine?
(Ans- The engine driven pumps
What is the purpose of the Fuel Crossfeed?
(Ans-
-Allows fuel to both engines from one tank
-Used to correct fuel imbalance
What powers the Refueling and Defueling panel?
(Ans- Powered by BATT 2 or DC Buses
How many fuel tanks does the airplane have?
(Ans- 2 integral tanks
,Where is fuel tank temp taken?
(Ans- Left wing tank (-40 C min)
What types of fuel pumps are in each wing?
(Ans-
-Primary ejector pump
-ACMP
-DCMP (right tank only)
-3 scavenge ejector pumps
What is the Primary ejector pump?
(Ans-
-Venturi pump with no moving parts and no electrical pwr
-Powered by motive flow only
What is the purpose of the ACMP?
(Ans-
-Back-up pump in case primary ejector pump fails
-Engine start
-Crossfeed operations
, What is the purpose of the DCMP?
(Ans- Used for APU or eng start if AC power or the ACMP is not available.
What is the purpose of the scavenge pumps?
(Ans- Maintains fuel level in the collector box
What pump is used once an engine is started?
(Ans- Associated primary ejector pump
What is the surge/vent tank?
(Ans-
-Collects fuel during wing-down maneuvers and returns
it to the main tanks once the wings are level
-Equalizes tank pressure with atmosphere in flight and
during refueling
Can fuel be transferred from tank-to-tank or be dumped overboard?
(Ans- No
What happens when the crossfeed switch is selected to LOW 1?
(Ans-
-Crossfeed valve is opened
-Commands the ACMP 2 to "ON" to provide fuel from the
Preparations Exam: Questions & Answers
What is an ICC?
(Ans- An electrical control device which provides power distribution and
protection for electrical loads.
What is an SPDA?
(Ans- An electrical load-mgmt unit powered by the ICC's that distributes electrical
loads to aircraft systems according to distribution logic.
Can the flight crew reset the ICC and SPDA remote electronic CB's?
(Ans-
-ICC CB's can only be reset by Maintenance
-SPDA CB's can be reset bia the MCDU
What is the purpose of the fuel collector box?
(Ans-
-Keeps fuel pumps submerged
-Ensures constant fuel flow to respective engine
How many fuel pumps do we have on the EJET?
(Ans-
-2 eng driven
-2 ejector
,-6 scavenge
-2 AC electric
-1 DC electric
Where are the fuel ejector pumps located?
(Ans- In the collector tanks
Which pumps provide motive flow to the ejector pumps and are the primary fuel
source to the engine?
(Ans- The engine driven pumps
What is the purpose of the Fuel Crossfeed?
(Ans-
-Allows fuel to both engines from one tank
-Used to correct fuel imbalance
What powers the Refueling and Defueling panel?
(Ans- Powered by BATT 2 or DC Buses
How many fuel tanks does the airplane have?
(Ans- 2 integral tanks
,Where is fuel tank temp taken?
(Ans- Left wing tank (-40 C min)
What types of fuel pumps are in each wing?
(Ans-
-Primary ejector pump
-ACMP
-DCMP (right tank only)
-3 scavenge ejector pumps
What is the Primary ejector pump?
(Ans-
-Venturi pump with no moving parts and no electrical pwr
-Powered by motive flow only
What is the purpose of the ACMP?
(Ans-
-Back-up pump in case primary ejector pump fails
-Engine start
-Crossfeed operations
, What is the purpose of the DCMP?
(Ans- Used for APU or eng start if AC power or the ACMP is not available.
What is the purpose of the scavenge pumps?
(Ans- Maintains fuel level in the collector box
What pump is used once an engine is started?
(Ans- Associated primary ejector pump
What is the surge/vent tank?
(Ans-
-Collects fuel during wing-down maneuvers and returns
it to the main tanks once the wings are level
-Equalizes tank pressure with atmosphere in flight and
during refueling
Can fuel be transferred from tank-to-tank or be dumped overboard?
(Ans- No
What happens when the crossfeed switch is selected to LOW 1?
(Ans-
-Crossfeed valve is opened
-Commands the ACMP 2 to "ON" to provide fuel from the
