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What Is The Floor Made Out Of?  
User currently offlineJcs17 From United States of America, joined Jun 2001, 8065 posts, RR: 39
Posted (11 years 8 months 4 weeks 1 day 18 hours ago) and read 4991 times:

What are aircraft floors made out of, in other words, whats under the carpet? When you walk on it, it feels like either a really hard plastic or rubber. Obviously, there are crossbeams running through the floor, correct?


America's chickens are coming home to rooooost!
11 replies: All unread, jump to last
 
User currently offline737doctor From United States of America, joined Mar 2001, 1332 posts, RR: 38
Reply 1, posted (11 years 8 months 4 weeks 1 day 16 hours ago) and read 4953 times:

737 floorboards are of honeycomb composite construction which are screwed down with titanium screws into nutclips or nutplates attached to aluminum floorbeams. Nutclips are just like they sound; they have a nut built in and clip around a hole. Nutplates are similar, but more solidly attached; they are riveted to the supporting structure. Floorboards have foam tape on the underside around the edges where they contact the structure and the ones in the "wet areas" (lavs/galleys) are sealed to prevent corrosion. The carpet is attached with double-sided tape.

Pretty boring stuff.



Patrick Bateman is my hero.
User currently offlineAvioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 2, posted (11 years 8 months 4 weeks 1 day 7 hours ago) and read 4838 times:

The Hexelite Company of Casa Grande AZ is one of the biggest vendors of these floor boards. You can get more info from their website.
I'm not too sure about the titanium screws, though. Aluminum and Titanium don't play very well as evidenced by the 757 Door problems ten to twelve years ago.



One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533
User currently offlineIkarus From United Kingdom, joined Jan 2001, 3524 posts, RR: 2
Reply 3, posted (11 years 8 months 4 weeks 1 day 4 hours ago) and read 4811 times:

Usually honeycomb (Aluminium, CFRP or GFRP). As far as I know, Boeing planes have CFRP more often, whereas Airbus ones tend to have GFRPs - although that memory may be wrong and ultimately, it's up to the airlines.

(CFRP = Carbon Fibre Reinforced Polymers
GFRP = Glass Fibre Reinforced Polymers)

As 747Skipper said, the area under the lavs is usually metal (urine has ammoniac in it, which is highly corrosive for aluminium! - Does anyone know whether that lesson was learned "the hard way" (i.e. by lots of corrosion & early retirement or even serious incidents)?)

Regards

Ikarus


User currently offlineN777UA From United States of America, joined Mar 2010, 0 posts, RR: 0
Reply 4, posted (11 years 8 months 4 weeks 1 day 4 hours ago) and read 4801 times:

What was the early problem with 757 doors?

User currently offline737doctor From United States of America, joined Mar 2001, 1332 posts, RR: 38
Reply 5, posted (11 years 8 months 4 weeks 1 day 3 hours ago) and read 4776 times:

You don't have to be sure, I've screwed down enough floorboards to know for sure...  Big grin


Patrick Bateman is my hero.
User currently offlineFokker lover From , joined Dec 1969, posts, RR:
Reply 6, posted (11 years 8 months 4 weeks 1 day 2 hours ago) and read 4774 times:

I'll concur with 737 Doctor. Titanium screws in the floorboards, and practically everywhere else in that airplane. I'll also admit to tossing a few titanium rico tips in amongst the Philips heads, just to get a charge out of NKP-S2.

User currently offlineNKP S2 From United States of America, joined Dec 1999, 1714 posts, RR: 5
Reply 7, posted (11 years 8 months 4 weeks 23 hours ago) and read 4738 times:

Watch it there Fokkerlover, or I'll start installing screws with a dab of 'Lok-Tite' on the threads Smile

User currently offlineIMissPiedmont From United States of America, joined May 2001, 6326 posts, RR: 33
Reply 8, posted (11 years 8 months 4 weeks 20 hours ago) and read 4714 times:

OK I'll admit it. I'm older than most of you. The floor panels I remember were all balsa wood with aluminum skins. I never saw a honeycomb floor board. Logical thoughthat a honeycomb has replaced this as we used to guess the weight of the woman that trashed the panels because of the high heels, sexy as hell but destroys the balsa/aluminum combo quickly.


Damn, this website is getting worse daily.
User currently offlineKAL_LM From United States of America, joined Jun 2001, 497 posts, RR: 0
Reply 9, posted (11 years 8 months 4 weeks 20 hours ago) and read 4711 times:

Plywood....

No, I'm serious, once on a unnamed cargo charter, saw a deck floor patched with plywood. It wasn't too big, maybe 1-2 sq. feet, but it was plywood. Knew it was too cause it didn't flex like the normal flooring does.

regards,
Tom



is that a light at the end of the tunnel or just a train?
User currently offline737doctor From United States of America, joined Mar 2001, 1332 posts, RR: 38
Reply 10, posted (11 years 8 months 4 weeks 19 hours ago) and read 4702 times:

Yeah, I remember the aluminum/balsa combo on some of the DC-8's I worked on "back in the day".  Big grin


Patrick Bateman is my hero.
User currently offlineDalmd88 From United States of America, joined Jul 2000, 2600 posts, RR: 15
Reply 11, posted (11 years 8 months 4 weeks 12 hours ago) and read 4742 times:

Bag bin floors in the MD-80 are still aluminum/balsa. The cabin floors are honeycomb but the screws are just regular steel in our airplanes. They have a shallow countersink with points on the ends.

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