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Headrests Must Be Lowered?  
User currently offlinecloudboy From United States of America, joined Jan 2004, 807 posts, RR: 0
Posted (1 year 2 months 12 hours ago) and read 2323 times:

I was always curious about why they required headrests to be lowered during takeoff and landing. I can understand seats being upright, but what are the issues with headrests?


"Six becoming three doesn't create more Americans that want to fly." -Adam Pilarski
7 replies: All unread, jump to last
 
User currently online26point2 From United States of America, joined Mar 2010, 813 posts, RR: 0
Reply 1, posted (1 year 2 months 11 hours ago) and read 2309 times:

Same as putting seat upright and stowing things under the seat, it makes a clear path for emergency evacuation.

User currently offlinenws2002 From United States of America, joined Feb 2008, 883 posts, RR: 0
Reply 2, posted (1 year 2 months 9 hours ago) and read 2264 times:

The seats are tested to withstand forces in certain positions.

User currently offlineTupolevTu154 From Germany, joined Aug 2004, 2178 posts, RR: 28
Reply 3, posted (1 year 2 months 7 hours ago) and read 2209 times:

I think it's probably more to do with preventing/decreasing whiplash if the aircraft were to hit something or if an accident were to occur. Similar to the headrest in your car which technically should be far enough forward to support the back of your head at all times.


Atheists - Winning since 33 A.D.
User currently offlinecloudboy From United States of America, joined Jan 2004, 807 posts, RR: 0
Reply 4, posted (1 year 2 months 6 hours ago) and read 2207 times:

Which would then make sense that it should be raised, no? I guess I dont understand how it contributes to structural integrity or poses an evacuation impediment. Really, I want to know if they can make seats with higher backs


"Six becoming three doesn't create more Americans that want to fly." -Adam Pilarski
User currently offlinebikerthai From United States of America, joined Apr 2010, 2070 posts, RR: 4
Reply 5, posted (1 year 2 months 6 hours ago) and read 2201 times:

From a structural analysis stand point:

When a head rest is up and there is fore-aft load during a crash landing, there is more moment across the base (where the head rest attach to the seat). So with the head rest down, it has a better chance at staying put.

From an evacuation stand point:

Also I've read about crashes where passengers climbs over the seats to get out off the airplane. Lowering the head rest will reduce the amount of obstruction that passenger will see.

bt



Intelligent seeks knowledge. Enlightened seeks wisdom.
User currently offlineTod From Denmark, joined Aug 2004, 1724 posts, RR: 3
Reply 6, posted (1 year 2 months 3 hours ago) and read 2140 times:

Quoting cloudboy (Reply 4):
Really, I want to know if they can make seats with higher backs

There is also a requirement that flight attendants must be able to see 80 percent of the pax during taxi, take-off and landing.


User currently offlineJetlagged From United Kingdom, joined Jan 2005, 2543 posts, RR: 24
Reply 7, posted (1 year 1 month 4 weeks 2 hours ago) and read 1720 times:

Quoting cloudboy (Reply 4):
Really, I want to know if they can make seats with higher backs

They can and do for aircraft with rearward facing seats. In that case you brace against the seat back and the full height headrest protects you. In a forward facing seat you brace against the seat in front, so your headrest position is immaterial. The kind of flimsy headrest you get in a normal seat is for comfort purposes only, it has no real strength, so is perhaps best folded out of the way. Even if a higher stronger headrest was provided, no matter how hard you try to brace against it, in a normal impact you will be thrown forward.



The glass isn't half empty, or half full, it's twice as big as it needs to be.
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