FuelT-6A Fuel SYS107

Question 1

Approx. Fuel storage

Answer 1

1100 Lbs Usable
1200 Lbs Maximum (179 Gallons)

Ind. Tank Capacity:
Left - 530
Collector - 40
Right - 530

Question 2

How is fuel fed to the engine

Answer 2

Motive flow system

Question 3

Define Motive flow

Answer 3

Moving fuel through the lines causing a pressure difference between fuel lines and tanks, this causes lower static pressure creates “Siphoning” effect pulling fuel from the tanks

Question 4

3 Fuel Tanks

Answer 4

Left-Wing Tank
Collector Tank
Right-Wing Tank

Question 5

Refueling Methods

Answer 5

Single-point pressure:
Used for simultaneously refueling both wings Via the side, single point adapter.

Over the wing gravity refueling:
Uses 2 ports, one on each wing. Used to increase capacity by 50 lbs in each wing.

Question 6

Gravity Port Restrictions

Answer 6

There is no automatic shutoff for this method.

Fuel cannot be defueled via the over the wing gravity ports

Question 7

Define Defueling

Answer 7

Removal of fuel from the aircraft. (Done in 5 min. when performing extensive maintenance)

Question 8

Describe Boost Pump

Answer 8

-Located in the collector tank-
Provides fuel for initial engine startup, and serves as a backup to the engine-driven low-pressure fuel pump

Any time PSI is below 10 in the motive fuel line, or the PCL is above the start ready position, the Electric boost pump is turned on.

Question 9

Describe the fuel filter

Answer 9

Fuel pumped through the lines to the fuel filter, used to prevent contaminants to flow through. The filter is equipped with a fuel bypass

Question 10

Fuel Shutoff Valves

Answer 10

Firewall Shutoff valve:
Actuated by firewall shutoff handle, stops fuel flow to the engine. (Can be reversed)

Maintenance shutoff valve:
Used to isolate the fuel system for engine or fuel filter maintenance

Question 11

Fuel Pumps

Answer 11

An engine-driven low-pressure fuel pump is what feeds fuel to the Engine-Driven High-pressure fuel pump based on engine requirements.

Question 12

Describe FMU

Answer 12

The engine-driven high-pressure fuel pump routes fuel to the FMU
The FMU controls fuel delivery to the engine

Question 13

Fuel Flow Transmitter

Answer 13

-Located closer to the engine-

This sends a signal to the Alternate Engine Data Display.

Question 14

Motive Flow Line

Answer 14

Fuel is routed from low-pressure fuel pump down the motive flow line.

Is used to drive the primary and transfer jet pumps

Question 15

Primary Jet Pump

Answer 15

Fuel delivered by the motive fuel line drive the primary jet pump, the jet pump delivers fuel from collector tank to the low-pressure fuel pump

Question 16

Venturi Flow

Answer 16

Both Primary and Transfer jet pumps operate bu Venturi flow

Question 17

Flip-Flop Valve

Answer 17

This valve allows a Min. of 15 Sec. of fuel to feed to the engine during negative-G flight

Question 18

Fuel Level Probes

Answer 18

There are 7 Fuel level Probes.
3 in each wing tank
1 in the collector tank

They send the fuel level signal to the AEDD

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