In this episode, we break down the critical systems that keep aircraft safe and operational—fuel, heating, electrical, hydraulic, and landing gear. From understanding gravity-feed versus fuel-pump fuel systems to preventing contamination and icing, fuel management emerges as one of the most vital responsibilities for pilots. We also explore how cabin heating systems work—and the risks of carbon monoxide exposure—along with electrical power generation and distribution, hydraulic pressure applications, and the strengths of tricycle versus conventional landing gear. Whether you’re a student pilot, aviation enthusiast, or just curious about the hidden engineering behind every flight, this briefing delivers the essential knowledge needed to understand how aircraft airframe systems work together to ensure safety and reliability in the air.