In message , at 11:57:46 on
Thu, 13 Oct 2011, Bruce remarked:
Roland Perry wrote:

In message , at 22:00:18 on
Wed, 12 Oct 2011, Charles Ellson remarked:

The "taxiway" runway is an alternative to the normal one when the
latter is closed for some reason.

So not alternate runways but primary and secondary.

Yes, the use alternates between the two.

Wrong. That wording suggests more or less equal use, when in fact the
emergency runway is rarely used.

Perhaps I should have insisted on my original word: "alternative".
--
Roland Perry