Re: 747 100/200 differentiation question

From:         kls@ohare.Chicago.COM (Karl Swartz)
Organization: Chicago Software Works, Menlo Park, California
Date:         10 Jul 95 16:36:55 
References:   1 2 3
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>Another helpful, but not fool-proof, cue was the 3-window upper-deck on the
>-100's.  Most of the -100's were made in this configuration but some of the
>later aircraft in the series also came with the 10(?)-window layout.

I used to think that too.  As you note, later -100s were built with
the newer configuration, and an upgrade kit is (was) available too,
so ten windows could be either one.  Three windows doesn't confirm
a -100, though, as I've seen at least one photo of a -200 with the
"three-holer" config.  Thus either config is useless for figuring
out which variant you're looking at.

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