Air Tech- Fuel Systems

Why is a fuel vent required in the tanks? Select all that apply

• to allow for excess pressure to be vented

• to drain for contaminants

• to prevent tank collapsing during fuel consumption

• to allow water to be removed from the surface of the fuel

What is the purpose of a sump?

• to gather the contaminants of the fuel

• to release excess pressure

• to drain and test the fuel

• to provide a positive pressure in the fuel lines

Where is 'unusable fuel' taken from?

• fuel drain

• expansion space

• fuel vent

• sump

After the fuel tank where does the fuel line lead?

• carburettor

• cylinder

• fuel selector valve

• engine driven pump

When is it a good idea to turn on the boost fuel pump?

• for start, take off and landing

• for shut down, cruise and descent

• for start, take off and climb

• for shut down, low flying and cruise

What should you do if the fuel pressure is low?

• turn the oil pump on

• check mixture is rich

• land asap

• turn the fuel pump on

Which statement is incorrect

• priming is not generally required on a hot day

• primer must be locked when the engine is running

• fuel pump should be on for low flying

• high wing aircraft generally require fuel pumps

Why should you not run a tank dry before swapping tanks?

• Vapour locking could occur

• Fuel pressure might exceed to higher limits

• Oil pressure may drop too low

• Mixture may become too lean

AVGAS is ____ leaded than MOGAS giving it a _____ octane/performance rating

• more, lower

• more, higher

• less, lower

• less, higher

_____ vaporises easier therefore when using it instead of AVGAS you are more likely to get vapour locking

• AVTUR

• MOGAS