I wanted to ask, what are the benefits of doing so?
Does it affect the structure of the aircraft?
And are they permanent? Or can they be removed if the seating configuration changes and the windows are required?
Bigsmile From United Kingdom, joined Mar 2005, 176 posts, RR: 3
Reply 2, posted (9 years 8 months 2 weeks 1 day 13 hours ago) and read 4695 times:
These aren't permanent. They are fitted the same way the windows are fitted. They are just cosmetic blanks. There is no more structural benefit from these blanks when compared to the windows. They are fitted usually behind galleys, toilets etc so you don't see the back of it from outside, galley's, toilets etc are not the most attractive things when you get behind them. Sometimes you do see some blanks fitted with aerials attached.
AFAIK, there is no real benefit. They just fill a gap where a window is not required, for example a toilet, a galley bulkhead etc.
Perhaps window plugs save a little weight, but I'd imagine it'd a negligable ammount in relation to the entire aircraft.
Quoting B744F (Reply 1): Does it affect the structure of the aircraft?
Nope, think of them as windows made out a metal window. They are just as secure, perhaps even stronger.
Crosswind From United Kingdom, joined Nov 2000, 2621 posts, RR: 57
Reply 4, posted (9 years 8 months 2 weeks 1 day 13 hours ago) and read 4671 times:
Quoting AT (Thread starter): Or can they be removed if the seating configuration changes and the windows are required?
It's a fairly quick and simple process to plug and unplug a window - in very simple terms the glass window panel is replaced with a sheet metal plug and vice versa.
My airline recently reconfigured 2 ex-Vietnam Airlines B767s. The first window aft of Door 2L & R was already plugged due to a toilet being located on each side - during reconfiguration stowages were installed aft of the toilets on both sides of the cabin so the second window on each side aft of Door 2L & R was also plugged.
Tod From Denmark, joined Aug 2004, 1759 posts, RR: 3
Reply 5, posted (9 years 8 months 2 weeks 1 day 13 hours ago) and read 4594 times:
There are also locations that plugged because the main conditioned air ducting is routed there. For example, three locations on each side of a 747 forward of door three. IIRC, two on each side of 767 and one on each side of 737NG (old 737 using mulitple small ducts routed around the windows instead). For all practical purposes, these locations cannot be changed.
GARPD From UK - Scotland, joined Aug 2005, 2866 posts, RR: 4
Reply 6, posted (9 years 8 months 2 weeks 1 day 12 hours ago) and read 4583 times:
Quoting Tod (Reply 5): There are also locations that plugged because the main conditioned air ducting is routed there. For example, three locations on each side of a 747 forward of door three. IIRC, two on each side of 767 and one on each side of 737NG (old 737 using mulitple small ducts routed around the windows instead). For all practical purposes, these locations cannot be changed.
I don't thinks these locations feature "plugged" windows. Rather, no window cutting at all. Simply clean sheet metal fuselage.
Why not? I have been involved in converting small twin-engined a/c into freighters. We would often remove windows and install metal blanks. The metal can still be checked from the inside and there is no longer any need to get out the prism and check the window for cracks, or to polish out scratches. There is a huge difference in maintenance requirements; there are guys working at QANTAS who do nothing but change windows.
Monty Python's Flying Circus has nothing to do with aviation, except perhaps for Management personnel.
Whiskeyflyer From Ireland, joined May 2002, 224 posts, RR: 0
Reply 17, posted (9 years 8 months 1 week 6 days 16 hours ago) and read 3992 times:
also metal plugs make washing and painting easier
you do not need to waste time ensuring no abrasive cleaners/stripper gets on the windows (masking windows prior to stripping/painting consummes a lot of manhours)
The MM specifies limits to scratches, nicks, abrasions (those little scratches) etc that a window may have (varies by aircraft type), if it exceeds limits, you replace the window (and hope the polishing shop can restore the windows within limits) Dusty climes and pollution result in abrasing of windows so best to put the metal in and keep your windows in stock for pax (boxes don't admire the view and they don't complain........... brings back happy memories of when I was a freight dog and left oil all over the ramp in our thrusty DC8-55F)
HAWK21M From India, joined Jan 2001, 31775 posts, RR: 55
Reply 20, posted (9 years 8 months 1 week 6 days 5 hours ago) and read 3900 times:
Quoting SkydrolBoy (Reply 18): It's the Vortex Generators that they install infront of the windshield that makes for a quieter cockpit, not the removal of the windows. You can see them in the picture below just behind the radome.