What is the most expensive part of an airplane?
Did you know the engine is the most expensive part of an airplane? A single jet engine can cost between $10 million and $30 million (€9,5 million – €28,7 million), depending on its size and technology. Engines are meticulously maintained to ensure safety and performance. Each engine carries a list price of roughly $25 million to $30 million. Because the 747 uses four engines, a full set can exceed $100 million, making the engines one of the most expensive components of the aircraft.