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Aircraft Diversions During Ocean Crossings  
User currently offlineMatt_milligan From Canada, joined Jan 2002, 79 posts, RR: 0
Posted (12 years 10 months 3 days 19 hours ago) and read 1232 times:

I know from a documentry that I just watched that aircraft on transatlantic crossings are beyond the range of radar but are kept approximately 95 miles apart by using GPS reporting points.

What happens if an aircraft has to divert to a different airport due to an emergency or like many did on 9/11. How is seperation maintained for an unplaned movement beyond radar range?



3 replies: All unread, jump to last
 
User currently offlineBoeing764 From Canada, joined Apr 2001, 298 posts, RR: 0
Reply 1, posted (12 years 10 months 3 days 16 hours ago) and read 1181 times:

The oceanic tracks are seperated by, I think, fifty nautical miles horizontally. So when an aircraft needs to divert they call the controller on the HF radio and advise him/her of their situation. There is lots of room between the tracks to turn right or left and descend to an altitude they are able to mantain or an available altitude for an opposite direction routing. The controller can maintain seperation between all flights via voice communications or Satcomm.
I am no expert but I used to listen to San Francisco ATC on my shortwave radio.


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User currently offlineJhooper From United States of America, joined Dec 2001, 6206 posts, RR: 12
Reply 2, posted (12 years 10 months 17 hours ago) and read 1109 times:

I bet TCAS was used heavily on Sept. 11 in this case.


Last year 1,944 New Yorkers saw something and said something.
User currently offlineGoboeing From United States of America, joined Jun 2000, 2727 posts, RR: 15
Reply 3, posted (12 years 10 months 16 hours ago) and read 1101 times:

Just for your information, the North Atlantic tracks are 60 NM apart from each other.

Nick


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