CAT IIIC minimums

OK, then why do they include IIIC line with an "NA" on some
plates and omit it altogether on others?


Sam Spade wrote:
Andrey Serbinenko wrote:
A question: the landing minimums section for ILS CAT-III approaches
may have separate lines for A, B, and C. In some cases the C line
has an "NA" for visibility, and on some other plates the whole C
line is missing. So, what's the difference? Does "NA" mean "not
authorized", i.e. CAT-IIIC cannot be used?

Thanks!


Andrey

NA indeed means Not Authorized.