deliver. let's begin with our aviation correspondent rene marsh with the very latest. rene? >> a sudden shift in focus. again, this search zone has moved and authorities say that's thanks to a credible lead. that lead? more analysis of existing data with an entirely new search zone in play, does that mean crews wasted time searching the wrong area for more than a week? the new zone, roughly 1,023 square miles, larger than the state of new york and 300 miles closer to the australian coastline a shorter trip for search planes. >> this is our best estimate of the area in which the aircraft is likely to have crashed into the ocean. >> reporter: so why change everything three weeks after the plane disappeared? more radar and satellite analysis makes investigators Get Live News Updates Every Minute from vimarsana.com Curated from 23000 News Agencies."> deliver. let's begin with our aviation correspondent rene marsh with the very latest. rene? >> a sudden shift in focus. again, this search zone has moved and authorities say that's thanks to a credible lead. that lead? more analysis of existing data with an entirely new search zone in play, does that mean crews wasted time searching the wrong area for more than a week? the new zone, roughly 1,023 square miles, larger than the state of new york and 300 miles closer to the australian coastline a shorter trip for search planes. >> this is our best estimate of the area in which the aircraft is likely to have crashed into the ocean. >> reporter: so why change everything three weeks after the plane disappeared? more radar and satellite analysis makes investigators Get Live News Updates Every Minute from vimarsana.com Curated from 23000 News Agencies." property="og:description"> deliver. let's begin with our aviation correspondent rene marsh with the very latest. rene? >> a sudden shift in focus. again, this search zone has moved and authorities say that's thanks to a credible lead. that lead? more analysis of existing data with an entirely new search zone in play, does that mean crews wasted time searching the wrong area for more than a week? the new zone, roughly 1,023 square miles, larger than the state of new york and 300 miles closer to the australian coastline a shorter trip for search planes. >> this is our best estimate of the area in which the aircraft is likely to have crashed into the ocean. >> reporter: so why change everything three weeks after the plane disappeared? more radar and satellite analysis makes investigators Get Live News Updates Every Minute from vimarsana.com Curated from 23000 News Agencies.">