Now many people like to go out by plane, but I don't know if you have noticed every time you take a plane. Whether it's the boarding corridor bridge or the boarding ladder in the far seat, passengers always board from the left side of the plane. So, why is boarding always from the left side of the plane? Instead of boarding from the right?
In fact, boarding from the left side is just a habit that has been used by the maritime industry. Just like most countries drive on the right side and a few countries drive on the left, it is also a habit that has been used. In the past, the rudder of a ship was mostly installed on the right side of the ship. If the ship berthed on the right side, it would be blocked, so it was always berthed on the left side. Therefore, the nautical circles used to call the left side of the ship 'port side' and the right side 'starboard side'. This habit has been retained until now, and even used to the civil aviation industry. If you look carefully, the corridor bridges of the airport are all designed on the left side. When the plane stops, the corridor bridges will slowly approach the plane from the left side.
As the left side door is used to board passengers, the dining car and luggage are sent to the plane from the right side door. For example, the rear door on the right side is the entrance and exit for food and service vehicles, and the luggage compartment door is generally designed at the front and under the rear on the right side.
In addition, aircraft refueling is mostly from the right wing below the refueling port refueling. In this way, passengers' boarding and food delivery vehicles, loading and unloading luggage and refueling are separated on both sides of the aircraft, so that they can not interfere with each other and improve the efficiency of the airport. However, when an emergency occurs on the plane, the left and right cabin doors of the plane will no longer be distinguished according to their functions. All the cabin doors will be opened at the same time as the escape exits, and the inflatable slides will all be lowered. Take a Boeing 777-300ER as an example, there are 10 doors in the cabin, and it is estimated that at most four of them can be opened frequently. The rest of the doors are designed to ensure that all passengers in the cabin can be evacuated at the fastest speed in case of emergency.