The Fuel System

Question 0

What is the fuel capacity and how is it stored?

How much is unusable?

Answer 0

There are two 55-gallon bladder nacelle tanks.

One gallon in each tank is unusable.

Question 1

What type of gas is used?

Answer 1

100 low lead (blue)

Question 2

1) What kind of fuel pumps does the Seminole have?

2) What are the electric pumps used for?

Answer 2

There are two engine driven fuel pumps and two electric pumps.

The electric pumps are used for engine start, takeoff, landing and fuel selector changes.

Question 3

ATP uses electric fuel pumps for engine start, takeoff, landing and fuel selector changes as well as?

Answer 3

In flight maneuvers, except steep turns.

Question 4

Explain how to cross feed fuel.

1) what are the three fuel selector switch positions?
2) when should the fuel selector remain in the “on” position?
3) what happens when “X-feed” is selected?
4) can fuel be transferred from tank to tank?
5) what flight configuration is crossfeed limited to?

Answer 4

1) On, off, x-feed
2) Should remain on during normal operations
3) The engine draws fuel from the tank on the opposite side.
4) No, fuel cannot be transferred
5) It is limited to straight and level flight only

Question 5

What is the correct procedure to crossfeed fuel from the right tank to the left engine?

Answer 5

1. Left engine electric boost pumps on
2. Left fuel selector to “X-FEED”
3. Check left fuel pressure
4. Left engine electric boost pump off
5. Check fuel pressure