To: (Separate email addresses with commas)
From: (Your email address)
Message: (Optional)
Send
Cancel

Thanks!

Close

Quiz: Can You Answer These 6 Aircraft Fuel Questions?

USAF

Aircraft fuel is pretty simple, right?


  1. 1) How much does 100 low lead fuel weigh per gallon (at ISA)?

    According to the FAA, 100LL weighs 6 pounds per gallon. Actually, it's 6.01 pounds at 15 degrees C, if you want to be exact.

    According to the FAA, 100LL weighs 6 pounds per gallon. Actually, it's 6.01 pounds at 15 degrees C, if you want to be exact.

    1. 1-1
      Unchecked Checked
    2. 1-2
      Unchecked Checked
    3. 1-3
      Unchecked Checked
    1. 1-4
      Unchecked Checked
    2. 1-5
      Unchecked Checked
    3. 1-6
      Unchecked Checked
  2. 2) Why does avgas have lead in it?

    It's still used because it prevents engine knocking, also known as detonation.

    It's still used because it prevents engine knocking, also known as detonation.

    1. 2-1
      Unchecked Checked
    2. 2-2
      Unchecked Checked
    1. 2-3
      Unchecked Checked
    2. 2-4
      Unchecked Checked
  3. 3) Engine pre-ignition is _______.

    Pre-ignition is an event where the air/fuel mixture in the cylinder ignites before the spark plug fires. It's usually caused by hot spots in the cylinder, a spark plug that's too hot, or carbon deposits in the cylinder.

    Pre-ignition is an event where the air/fuel mixture in the cylinder ignites before the spark plug fires. It's usually caused by hot spots in the cylinder, a spark plug that's too hot, or carbon deposits in the cylinder.

    1. 3-1
      Unchecked Checked
    2. 3-2
      Unchecked Checked
    1. 3-3
      Unchecked Checked
    2. 3-4
      Unchecked Checked
  4. 4) You sample the fuel out of an aircraft, and it's clear. What kind of fuel is on board?

    When it's clear you have Jet A on board. Jet A can also be straw-colored, but in this example, no other fuel is clear.

    When it's clear you have Jet A on board. Jet A can also be straw-colored, but in this example, no other fuel is clear.

    1. 4-1
      Unchecked Checked
    2. 4-3
      Unchecked Checked
    3. 4-11
      Unchecked Checked
    1. 4-4
      Unchecked Checked
    2. 4-5
      Unchecked Checked
    3. 4-6
      Unchecked Checked
  5. 5) Engine detonation is ________.

    Detonation happens when small pockets of fuel/air mixture ignite at the wrong time, typically before the spark plug fires. This causes shockwaves and a 'pinging' sound in the engine.

    Detonation happens when small pockets of fuel/air mixture ignite at the wrong time, typically before the spark plug fires. This causes shockwaves and a 'pinging' sound in the engine.

    1. 5-1
      Unchecked Checked
    2. 5-2
      Unchecked Checked
    1. 5-3
      Unchecked Checked
    2. 5-4
      Unchecked Checked
  6. 6) Prist (fuel system icing inhibitor) is made of __________.

    To be specific, it's actually Diethylene Glycol Monomethyl Ether, or DEGMME. And when it's added to fuel, any water that is in the fuel is prevented from crystalizing down to temps as cold as -85 degrees Celsius. That's cold.

    To be specific, it's actually Diethylene Glycol Monomethyl Ether, or DEGMME. And when it's added to fuel, any water that is in the fuel is prevented from crystalizing down to temps as cold as -85 degrees Celsius. That's cold.

    1. 6-1
      Unchecked Checked
    2. 6-2
      Unchecked Checked
    1. 6-3
      Unchecked Checked
    2. 6-4
      Unchecked Checked

Well, that was a tough quiz...

You scored % Better luck next time!

Share on Facebook Share on Twitter
Pic

Nice work, you have most of this fuel stuff down.

You scored %. Not bad.

Share on Facebook Share on Twitter
Pic

When it comes to aircraft fuel, you pretty much know it all.

You scored %. Well done!

Share on Facebook Share on Twitter
Pic

Thinking about becoming a pilot? Get started with Lift Academy, and find out what it takes to start your aviation career here.


Colin Cutler

Colin is a Boldmethod co-founder, pilot and graphic artist. He's been a flight instructor at the University of North Dakota, an airline pilot on the CRJ-200, and has directed development of numerous commercial and military training systems. You can reach him at colin@boldmethod.com.

Images Courtesy:

Recommended Stories

Latest Stories

    Load More
    Share on Facebook Share on Twitter Share via Email