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Mesa EJET > Fuel System > Flashcards

Flashcards in Fuel System Deck (32):
1

How many fuel tanks?

2 (1 each wing)

2

What is the purpose of the collector tank?

Keeps fuel pumps submerged to ensure constant fuel flow to respective engine

3

Max fuel quantity?

20,935 lbs.

4

Fuel low level warning?

660 lbs. in each tank

5

Fuel temperature taken from which tank?

Left wing tank

6

Minimum fuel temp?

-40 C

7

How many fuel pumps?

13 total

-2 engine driven
-2 ejector
-6 scavenge
-2 AC electric
-1 DC electric

8

Engine driven pump

Primary fuel source to engine
-Provides motive flow to primary ejector pump
-Provides the pressure for motive flow to scavenge pumps

9

Where are the ejector pumps located?

Collector tanks

10

Purpose of scavenge pumps?

Maintain adequate fuel level in collector tank

11

Purpose of AC fuel pumps?

Backup for ejector pumps

Used during cross feed operations

AC pump 2 provides fuel to APU when engine driven pump (EDP 2) is not running

12

What provides fuel to APU when EDP 2 is not running?

AC Pump 2

13

Where is the DC fuel pump installed?

The right wing

14

What is the purpose of the DC fuel pump?

Provides pressurized fuel for normal APU start when AC power or the AC fuel pump 2 is not available

15

Fuel cross feed

Allows fuel to both engines from one tank & used to correct fuel imbalance

16

Max fuel imbalance?

794 lbs

EICAS message appears at 800 lbs.

17

When does the EICAS fuel imbalance message disappear?

Fuel is within 100 lbs balanced

18

XFEED Knob
-LOW 1

Right wing tank electric pump turns ON and X-FEED valve opens

19

XFEED Knob
-LOW 2

Left wing tank electric pump turns ON and X-FEED valve opens

20

What closes the engine fuel shutoff valves?

Fire handles

21

Refueling

Pressure refueling or over wing gravity refueling

Powered by BATT 2 or DC BUSSES

22

Where is the fuel temperature taken?

Left tank

23

Fuel pumps in each wing?

-Primary ejector pump
-ACMP
-DCMP (right tank)
-3 scavenge ejector pumps

24

Pupose of ACMP?

-Back-up in case of primary ejector pump failure
-Engine start
-Cross Feed operations

25

Purpose of DCMP?

Used for APU or engine start if AC power or the ACMP not available

26

Purpose of scavenge pumps?

Maintains fuel level in collector box

27

What pumps are used once the engine is started?

Associated primary ejector pump

28

Purpose of the collector box?

Keeps the fuel pumps submerged and ensures constant fuel flow to respective engine

29

What is the surge/vent tank?

Collects fuel during wing down maneuvers and returns it to the main tank. Also equalizes tank pressure with atmosphere in flight and during refueling

30

Can fuel be transferred from tank to tank or dumped overboard?

No

31

What happens when the cross feed switch is selected to LOW 1?

Cross feed valve is opened, commands the ACMP 2 pump ON to provide fuel from right tank to both engines

32

When will the FUEL 1(2) LO LEVEL EICAS be presented?

660 lbs of fuel remaining in the associated tank