In article .com,
"Andrew Sarangan" wrote:

The FAA says runways without a 1000-ft overrun area are unsafe. The
solution? Extend the overrun by shortening the runway. That sounds
fishy to me. What am I missing here?

Reference:
http://www.miami.com/mld/miamiherald...l/15925782.htm

They are not going to physically shorten the pavement. The article says,
"shortening the length of usable runway". This (presumably) means
declaring some of the runway "unusable" by repainting runway markings,
changing lighting and signage, etc.

So, right now you've got (say) 9000 feet of pavement and performance is
calculated based on all 9000 feet. If you declare the last 500 feet to be
"unusable", everybody now has to do their performance calculations based on
the runway being 8500 feet long. Which means aircraft that require between
8500 and 9000 feet must either go elsewhere or somehow improve their
performance (typically by operating at lower gross weights, which means
fewer people, less freight, and/or less fuel).