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Originally Posted by clubman
Originally Posted by
T8191
Pluralisation does not require an apostrophe. .Thus 777s.
The possessive, however, does. .Thus a 777's AVOD.
That's exactly how I have always understood it to be.
Originally Posted by
T8191
It is not that difficult.

No, it really isn't.
Not so fast.
There certainly are times when use of "'s" to indicate a
plural is appropriate, as when it is necessary to avoid confusion or ambiguity. Thus, "Mind your p's and q's"; not, "Mind your ps and qs." And, "Today, the university conferred fifty-five Ph.D.'s."
I think it's also acceptable to refer to a decade as either "the 1990's" or "the 1990s," although my preference is for the former.
How would you refer to the plural of the Boeing 75L model that AA uses on some of its TATL flights? "75Ls" or "75L's"? How about the 747SP?