A&P - Aircraft and Powerplant Aircraft Fuel Systems Flashcards

What is the purpose of a fuel tank vent system?

Answer: Prevent tank collapse or rupture by equalizing pressure as fuel is consumed or temperature changes

Fuel tank vents allow air to replace fuel as it is used, preventing tank collapse, and also vent pressure caused by temperature changes.

What is the meaning of a fuel low-level warning light illuminating in the cockpit?

Answer: Fuel quantity has dropped to a critically low level requiring immediate attention

A fuel low-level warning light indicates the fuel in that tank has reached a critically low quantity, requiring the pilot to plan for landing.

What hazard does static electricity pose during aircraft fueling operations?

Answer: Static discharge can ignite fuel vapors, causing fire or explosion

Static electricity built up during fueling can discharge as a spark and ignite fuel vapors at the fuel cap opening.

What is the purpose of the aircraft-to-fueler bonding cable attached before refueling begins?

Answer: Equalize static charges between the aircraft and fuel truck to prevent spark ignition

The bonding cable equalizes static potential between the aircraft and fueler so that no spark is generated when the nozzle contacts the fuel port.

What does 'fuel crossfeed' allow in a multi-engine aircraft?

Answer: Any engine to draw fuel from any tank, providing flexibility during fuel imbalance

Crossfeed allows any engine to draw from any fuel tank, enabling fuel balancing and continued operation if one tank's boost pump fails.

What is a 'hot refueling' operation?

Answer: Refueling an aircraft while its engines are running

Hot refueling refers to fueling an aircraft with one or more engines running, a specialized procedure requiring strict safety protocols.