Tuesday, March 27, 2007

Um. Yeah, right.

For some reason the subject of "seats parts that may be used as flotation devices" has come up in conversation a number of times lately. Maybe it's because a number of the flights I've been on recently have been over-water, so the portion of the safety briefing that admonishes you to follow crewmember instructions and whatnot just stands out a bit more: "In the event of a water landing, your seat bottom cushion may be used as a flotation device."

Water landing?

Let's be honest. There's no such thing.

I mean, it's nice that this ultra-comfortable seat has a couple straps and that I can take it with me as I leave my carry-on luggage behind, and the emergency exit slides that convert to rafts are pretty cool as well. But if the airplane I'm on right now (as I type this) "lands" on the water, what's likely to happen, really?

Water weighs a little more than eight pounds per gallon. By the time you put an airliner into the water at somewhere around 200 miles an hour and displace thousands of gallons of water with just the engines, and when the wings make contact (assuming a flat, relatively gradual contact with the surface), the plane might as well have hit a mountainside covered in heavy, wet snow. Airplanes break when too much stress is applied, and if they happen to float, it's not likely to be for long.

But it sounds nice to remind us that in the event of a water landing (like it's a perfectly normal, happens-occasionally, hey-what-the-heck kind of thing) that the seat bottom is there for you. It will make exiting the gaping hole right behind you where the rest of the aircraft used to be that much more memorable and safe.

It's called a crash. Not a landing.

Kind of funny, the level of ridiculousness that gets injected into our little world nowadays. Avian flu pandemic contingency planning, seat bottom cushions... All for edge-case scenarios. Not that those are bad things to do, but when you can't get your freakin' luggage from one place to another reliably, it seem as if there are perhaps a few other things that could also use some attention.

However, if my plane ever lands on water, I promise you I'll be glad for the floaties. And they have a heater built in, too - right? Oh.



Add/Read: Comments [6]
Random Stuff
Tuesday, March 27, 2007 8:54:29 PM (Pacific Daylight Time, UTC-07:00)
#  

Referred by:
How safe are water landing (www.google.com) [Referral]
airliner water landing (www.google.com) [Referral]
Tuesday, March 27, 2007 11:21:49 PM (Pacific Daylight Time, UTC-07:00)
Hehe, fun post. As for edge cases, in modern jet passenger airliners, anything other than a safe takeoff, flight and landing are edge cases. A lot of the safety systems though are put in place to address problems seen with previous problem flights (you can read that as crashes if you like), and it's certainly possible that planes are designed to a certain degree to land in water if necessary.

I'm sure you'd rather have the flotation devices that may never be needed as opposed to the hubristic notions that caused the Titanic to sail without enough life rafts.
Thursday, March 29, 2007 11:27:14 AM (Pacific Daylight Time, UTC-07:00)
My only question is... - IF your seat cushion *becomes* a flotation device… Why can’t the plane *become* a BOAT!!!

Something to ponder while you are traveling.
Laters-
Saturday, March 31, 2007 12:04:59 PM (Pacific Daylight Time, UTC-07:00)
My favorite is going over "In the event of a water landing" on a flight from Portland to Atlanta. You know just in case the Great Salt Lake decides to just jump right out in front of the plane.
Chad
Tuesday, April 03, 2007 2:13:57 AM (Pacific Daylight Time, UTC-07:00)
Actually, it is possible to land on water, remember there are planes that do that every day (amphibious aircrafts), commercial aircrafts are not designed to land on water of course, but they have done, with at least some people surviving: http://en.wikipedia.org/wiki/Ditching
Fredrik Bonde
Friday, April 06, 2007 1:50:01 AM (Pacific Daylight Time, UTC-07:00)
LOL. Water landing indeed! still I suspect that "...in the unlikely event that we plummet into the sea..." would not home the same ring to it in He preflight briefing!
Tuesday, February 26, 2008 7:18:01 AM (Pacific Standard Time, UTC-08:00)
It really gets to me how people think they can labor a point that they know nothing about.

In fact, commercial aircraft are designed so that if a water landing is necessary they will break up, this is built in so that the passengers on board the aircraft can get out, and float around on the cushions or the life jackets that are provided. If they were built so the pilot could land on water with no damage, they would still sink, slower, but they would sink, and not as many people would be able to get out through the doors.

Another point I would like to make is that all pilots, commercial and privet, are trained to land in emergency situations, over land and on the sea, they will all know the limits of the aircraft and how to land without engines or other parts.

And can I point out the difference between what is know as a water landing or "ditching" and a crash
Crash, This is an uncontrolled landing over land or water
Ditching, This is a controlled emergency landing, over water, where the pilot will have partial or full control of the aircraft but cant make it back to an airfield.

Hence, I would like you to do some research from the industry before attempting to moan about something that a lot of thought and design work has gone into

-John
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