Why Airplane seats must stay upright

Anyone who has traveled by plane has heard the announcement. “Please return your seat to the full upright position.”

Many passengers think it is just a routine instruction but it is actually one of the most important safety rules in aviation.

Behind this simple request are years of scientific research safety testing and efforts to save lives.

Air travel is one of the safest ways to travel.  However aviation experts say that takeoff and landing are the most critical parts of any flight.

Most aircraft accidents happen during these two stages because the plane is close to the ground giving pilots very little time to react if something goes wrong.

That is why airlines strictly enforce safety rules during these moments including asking passengers to keep their seats fully upright. Although an airplane seat may look simple it is an important part of the aircraft’s safety system.

According to aviation safety standards seats go through tough crash tests before they are approved for use.

Engineers place crash test dummies in the seats and simulate accidents to make sure the seats can protect passengers during a strong impact.

These safety tests are performed only when the seat is in the upright position. In this position the seat frame locking system and floor attachments work together to provide the best protection.

A reclined seat has not been tested to the same safety standard. Seat belts are also designed to work best when passengers are sitting upright.

Airplanes use a lap belt that is meant to rest across the strong hip bones. In a sudden stop or impact the force is directed to these bones helping reduce the risk of serious internal injuries.

If the seat is reclined the body moves into a different position.  During a crash or heavy turbulence a passenger may slide under the seat belt. This is known as “submarining.”

When this happens the belt can press against the stomach instead of the hips increasing the risk of injuries to the abdomen and spine.

There is another simple reason as well. When a seat is reclined, the passenger’s head and upper body travel a greater distance before stopping during a sudden impact.

This extra movement can increase the force of the collision and lead to more serious injuries.

Safety is not only about surviving an accident. It is also about getting everyone out of the aircraft as quickly as possible.

International aviation rules require an airplane to be evacuated within 90 seconds even if some emergency exits cannot be used.

A reclined seat can block the person sitting behind from leaving quickly. In an emergency even a few seconds of delay can make a big difference.

That is why cabin crew always check that every seat is upright before takeoff and landing. Many people wonder why airlines allow passengers to recline their seats during the flight if it is considered a safety issue.

The answer is simple. Once the aircraft reaches cruising altitude the risk of an accident becomes much lower.

At that stage airlines allow passengers to recline their seats for comfort. However as soon as the plane begins its descent or prepares for takeoff the safety rules come into effect again.

Most flights end safely and many passengers may never realize why this rule is so important.  But aviation safety is based on being prepared for unexpected situations.

Even small precautions can help save lives. So the next time a flight attendant asks you to return your seat to the upright position remember that it is not just a routine announcement.

It is a safety measure backed by years of research testing and real world experience.