|Quoting Litz (Reply 3):|
Is there a weight difference between a window plug and a normal window?
|Quoting Ferret (Reply 10):|
When the plugs are installed, are all the panes removed or just covered
|Quoting SDWranglers (Thread starter):|
the windows are often removed and "filled in" with "skin".
|Quoting Buzz (Reply 11):|
|Quoting HAWK21M (Reply 12):|
|Quoting HAWK21M (Reply 14):|
Freighters conversions either Metal Plug or retain the Windows.I don't get your sentence.
|Quoting N231YE (Reply 17):|
I was talking about leaving the windows in-place, with a metal plug being mounted on top. Maybe the window is totally removed with Freighter conversions, and the window left in place on passenger variants in the advent of an aircraft sale to an operator that want the aircraft (and aircraft window use) configured differently...I don't know.
|Quoting Starlionblue (Reply 1):
Incidentally, most of the early 747-100s and -200s had 10 window holes per side on the upper deck, but many had only 3 windows. The rest were plates.
Photo © AirNikon
Photo © Frank C. Duarte Jr.
|Quoting LTU932 (Reply 21):
I believe that's not because windows were plugged, but because the structure allowed for only three upper deck windows per side on the early 747s. To convert those 747s to the 10 per side upper deck window configuration, you'd have to cut the upper deck section with the windows out and install the new one.
|Quoting Starlionblue (Reply 22):|
Good clarification. My (muddled) point was that many believe the -100 only had the "3 window" look. In fact, Boeing went to 10 during the -100 production run but many operators kept 3 windows despite the holes being there.
|Quoting LTU932 (Reply 21):|
believe that's not because windows were plugged, but because the structure allowed for only three upper deck windows per side on the early 747s.
|Quoting LTU932 (Reply 23):|
so this leads me to the question of when exactly the 10 window per side upper deck was introduced? I guess it wasn't immediately launched when Boeing was completing the prototype 747-200B aircraft in this picture.
|Quoting LTU932 (Reply 23):|
so this leads me to the question of when exactly the 10 window per side upper deck was introduced?
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