The Most Expensive Button on an Airplane

What does the “Fuel Jettison” button actually do? Long-haul aircraft often take off far heavier than their maximum landing weight. In an emergency, landing immediately could damage the landing gear or structure. So pilots dump fuel through wingtip nozzles, reducing weight before touchdown. Most of it atomizes and evaporates in the air. It may look like smoke — but it’s thousands of dollars of fuel. Expensive? Yes. Safe landing? Priceless. ✈️ TheAeroGraphyOfficial — real aviation systems explained daily.