There are 2 most important consideration about seat belt connected to specific dangers:
1) when plane crushing passenger can fly up and break they neck, thus passenger should be stick in place with belt
2) non fixed objects can fly into head and cause. Sever and even lethal outcome, thus passenger must have ability to duck on they place (which also noted in instruction for emergency). Therefore 3 point seatbelt cannot be used as it greatly slows down ducking.
Edit:
On very smal aircafts where potentially heavy luggage is not expected to be in same room as people, passengers commonly have 3 point seatbelt and pilots 4-5point searbelt
The seatbelt is there to keep you from bouncing all over the cabin during a crash. Its not like a 2-point or 3-point seatbelt is going to save your life any more than one or the other. Keeping you from bouncing all over the cabin is more likely to save your life and others because you are no longer bouncing into other people.
The seatbelt is there to keep you from bouncing all over the cabin during a crash. Its not like a 2-point or 3-point seatbelt is going to save your life any more than one or the other. Keeping you from bouncing all over the cabin is more likely to save your life and others because you are no longer bouncing into other people.
The seatbelt is there to keep you from bouncing all over the cabin during a crash. Its not like a 2-point or 3-point seatbelt is going to save your life any more than one or the other. Keeping you from bouncing all over the cabin is more likely to save your life and others because you are no longer bouncing into other people.
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