You are viewing an obsolete version of the DU website which is no longer supported by the Administrators. Visit The New DU.
Democratic Underground Latest Greatest Lobby Journals Search Options Help Login

Reply #23: You are correct [View All]

Printer-friendly format Printer-friendly format
Printer-friendly format Email this thread to a friend
Printer-friendly format Bookmark this thread
This topic is archived.
Home » Discuss » Latest Breaking News Donate to DU
14thColony Donating Member (1000+ posts) Send PM | Profile | Ignore Fri Jun-05-09 06:50 AM
Response to Reply #22
23. You are correct
After a few hundred miles at most from most coastlines there is no radar coverage. Simple physics - radars can't see past the 'radar horizon' of the Earth, which at ground level is as close as about 30 miles. To have radar coverage in the mid-Atlantic would require scores of radar picket ships on permanent station. So airliners report via radio, either automatically or when the crew does it manually, until they come back into radar controlled airspace on the other side.

There are no satellites that would have been able to provide a radar fix on the airliner, although there are some in orbit that would have been able to detect an explosion or fire related to the aircraft -- but only if they happened to be looking at the mid-Atlantic at that monent, which there would be no point in doing.
Printer Friendly | Permalink |  | Top

Home » Discuss » Latest Breaking News Donate to DU

Powered by DCForum+ Version 1.1 Copyright 1997-2002
Software has been extensively modified by the DU administrators

Important Notices: By participating on this discussion board, visitors agree to abide by the rules outlined on our Rules page. Messages posted on the Democratic Underground Discussion Forums are the opinions of the individuals who post them, and do not necessarily represent the opinions of Democratic Underground, LLC.

Home  |  Discussion Forums  |  Journals |  Store  |  Donate

About DU  |  Contact Us  |  Privacy Policy

Got a message for Democratic Underground? Click here to send us a message.

© 2001 - 2011 Democratic Underground, LLC