Text 24150, 43 rader
Skriven 2015-04-29 00:10:49 av Ward Dossche (2:292/854)
  Kommentar till text 24136 av Björn Felten (2:203/2)
Ärende: Re: Interesting site for aeroplane lovers
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BF>WD> because 70 miles from shore there is no radar coverage anymore.
 
BF> Then you have been watching something totally different from
BF> FlightRadar24. It does *not* rely on ground radar, but uses a completely
BF> different technology called ADS-B.
 
You're making the Roy Witt mistake ... Google something, read something on
Wikipedia or else, and consider yourself the expert.
 
I quickly called a friend who is a captain on the 777, another who is captain
on the 737-400 and another who flies the 747-400. All flying transoceanic.
 
They wonder what you have been smoking.
 
There is no contiguous ADS-B in the North Atlantic, certainly not in the South
Atlantic, not across the Pacific with the exclusion of Australia, not across
the Indian ocean ... etc ... Notice this concerns over-water flights.
 
ADS-B is getting introduced in North America by 2020 and becomes only effective
70 nautical miles off Newfoundland (and in the other direction off Ireland)
while strictly adhering to the existing track system.
 
ADS-B is getting organised in Europe by 2017 but delays can be expected for
political reasons.
 
The over-water information of FlightRadar24 is not accurate. It is an applet or
something similar based upon the filed flight plan and which can also be
obtained. If a flight is vectored by ATC a different way, for example
trans-oceanic track-E instead of original -A then FlightRadar24 will show the
A-track while in reality the plane is flying 250 nautical miles (450
kilometers) to the right.
 
I've seen it happening more than once, last fall when my daughter returned from
New York showing a flight path towards the north of Ireland over Belfast, then
suddenly that flight was 310km SW over Shannon when it approached the Irish
coast.
 
Please no more pulling of a Witt.
 
 \%/@rd

--- D'Bridge 3.99
 * Origin: Many Glacier -- Protect - Preserve - Conserve (2:292/854)