Why Planes Always Board From the Left: Safety & History Explained

Ever noticed that passengers consistently board and disembark commercial aircraft from the left side? It's always the same; the plane's door is on the left, you climb onto the jet bridge which is attached to the left side of the plane. But why the left? It all comes down to safety.

Safety First: Minimizing Hazards

A former pilot, Dan Bubb, shed light on this practice in an interview with Travel + Leisure. He explained that the right side of the plane is a bustling hub of activity, including refueling, baggage loading, and catering services.

"It would be very dangerous to have passengers boarding on that side (right) while there are other vehicles and equipment moving around," Bubb, also a professor at the University of Nevada, Las Vegas, pointed out. This is particularly crucial when passengers disembark using stairs instead of a jet bridge. Airports prioritize keeping passengers and crew away from potential hazards.

Logistics and Efficiency

The reason for left-side boarding is a blend of logistics and safety. Jet bridges are designed to connect to the left side, and loading passengers on the left keeps the right side free for other operations. This setup minimizes the risk of collisions between passengers and equipment, ensuring a smooth and efficient boarding process.

Historical Roots: From Ships to Planes

This practice actually predates airplanes. In maritime terminology, "port" and "starboard" refer to the left and right sides of ships, respectively. "Port side" literally means boarding from the left. While modern ships allow boarding from both sides, airplanes have continued to use the left for boarding and disembarking.

The Left-Side Boarding: A Legacy of Safety and Efficiency

The next time you step onto a plane, remember the reasons behind boarding from the left. It's not just a habit; it's a well-established practice rooted in safety and efficiency. By keeping the right side clear for operational activities, airports ensure the smooth and safe flow of passengers, baggage, and equipment around the aircraft. The left side boarding practice is a testament to the meticulous planning and safety considerations that govern the aviation industry.

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