A word you never want to hear during a flight is “brace, brace”. It is used as an instruction from the flight crew to the passengers that there is an impending crash landing and everyone should assume the brace position. It is covered in the safety instructions at the start of every flight.
The brace position varies for each country and airline, but the general principle is to bend forward, putting your head either on your lap or against the headrest of the seat in front of you, having your feet flat on the ground and covering your head with both of your hands.
The purpose of the brace position is to maximise your chance of survival in the event of a crash landing. A typical passenger jet travels at around 900km/h. When a plane crashes, extreme amounts of force are exerted on the plane chassis and its contents. The following is a non-exhaustive list of potential sources of injury for a passenger:
- Inertia and two-point seat belt (only across the waist) results in “jack-knifing”, where the body folds over at high speeds. This can cause catastrophic injury to abdominal organs and the spine.
- Head and neck injury against the seat in front, resulting in anywhere between a concussion to bleeding in or around the brain. Even if the head injury is survivable, being knocked out or confused after a concussion reduces your chances of escaping the crashed plane before collapse, fires or explosions.
- Whiplash injury of the neck.
- Limb injury from flailing.
- Injury from falling debris.
The brace position has been optimised over the last 20-30 years to reduce the risk of all of the above types of injuries, with multiple studies confirming that it is effective in reducing crash mortality.
Another positive news is that the risk of dying from a plane crash is extremely low. Your risk of dying on a flight is 1 in 60 million – far, far lower than the risk of dying from a car accident, being hit by a bus, a brain aneurysm or even being hit by lightning. Thanks to rigorous research, improved design and numerous safety features such as brace position, you have a 95% survival chance in an airplane crash, and even in serious crashes, the survival chance is 76%.
Of course, the minute percentage of plane crashes that result in fatalities tend to be non-survivable in the first place, but we cannot postpone death forever.