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Polar Route Decision  
User currently offlineflyenthu From United States of America, joined Dec 2012, 275 posts, RR: 0
Posted (1 year 3 months 6 days 1 hour ago) and read 3353 times:
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Hello:

I am wondering how a decision to fly a polar route is made? When I flew EK 211 on Jan 08, we went directly over the north pole: http://flightaware.com/live/flight/U...1/history/20130108/0530Z/OMDB/KIAH

However, today's flight is transatlantic: http://flightaware.com/live/flight/U...1/history/20130112/0530Z/OMDB/KIAH

How come such major differences in routing?

Just wondering!

9 replies: All unread, jump to last
 
User currently offlineViscount724 From Switzerland, joined Oct 2006, 24075 posts, RR: 22
Reply 1, posted (1 year 3 months 5 days 23 hours ago) and read 3264 times:

Quoting flyenthu (Thread starter):
How come such major differences in routing?

Location of the strong westerly jetstream winds on the day in question is probably the biggest factor.
http://www.salares.net/?en_world-jet-stream-forecast,38


User currently offlineatct From United States of America, joined Mar 2001, 2223 posts, RR: 39
Reply 2, posted (1 year 3 months 5 days 14 hours ago) and read 3080 times:

Also in areas like Alaska we have volcanic activity which causes frequent changes to flight plans. I would most likely assume though it was due to different wind speed / directions for the flight above.

atct



"The way to get started is to quit talking and begin doing." - Walt Disney
User currently offlineYukon880 From United States of America, joined Sep 2011, 137 posts, RR: 2
Reply 3, posted (1 year 3 months 4 days 23 hours ago) and read 2866 times:
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Just for the sake of further discussion, and not to discount the rationale of the previous responders, is it possible that the flight track shown by Flightaware for EK211 on 8Jan is not precisely the route flown on that particular date? From one date to the next, the variation in the plotted tracks is not just huge, but (virtually) off the chart!


Pratt & Whitney, In thrust we trust!
User currently offlineflyenthu From United States of America, joined Dec 2012, 275 posts, RR: 0
Reply 4, posted (1 year 3 months 4 days 19 hours ago) and read 2786 times:
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Quoting Yukon880 (Reply 3):

I actually flew on EK 211 on Jan 8 and we flew right over the North Pole. The Flightaware track flattens out at the top, but in reality we went polar that day. I was expecting a day flight, but as we headed towards the North Pole it got darker, and eventually it was night only for a few hours. I took pics of the flight map and will post it on a trip report when I get to it- hopefully soon.

One clarification, the second track link is from Jan 12.


User currently offlineStarlionblue From Greenland, joined Feb 2004, 16908 posts, RR: 67
Reply 5, posted (1 year 3 months 4 days 19 hours ago) and read 2765 times:

Quoting Yukon880 (Reply 3):
is it possible that the flight track shown by Flightaware for EK211 on 8Jan is not precisely the route flown on that particular date?

What input does Flightaware use? If it is radar it would be off. There's no radar coverage over the pole.



"There are no stupid questions, but there are a lot of inquisitive idiots."
User currently offlineatct From United States of America, joined Mar 2001, 2223 posts, RR: 39
Reply 6, posted (1 year 3 months 4 days 19 hours ago) and read 2763 times:

When I worked the tower at IAH, i noticed 2 or 3 times a week she'd go up over a NA track as opposed to the Polar route over Chicago / Hudson Bay.

atct



"The way to get started is to quit talking and begin doing." - Walt Disney
User currently offlineYukon880 From United States of America, joined Sep 2011, 137 posts, RR: 2
Reply 7, posted (1 year 3 months 3 days 16 hours ago) and read 2475 times:
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Quoting flyenthu (Reply 4):
I took pics of the flight map and will post it on a trip report when I get to it- hopefully soon.

Looking forward to the report!



Pratt & Whitney, In thrust we trust!
User currently onlineapodino From United States of America, joined Apr 2005, 4124 posts, RR: 6
Reply 8, posted (1 year 3 months 2 days 3 hours ago) and read 2211 times:

World Air Routes is a company based in Boston that produces a lot of high quality flight deck videos. They have one with Air Canada where they actually take you on a Polar Route from YYZ to HKG, and explain a lot of the things that go into planning such a route, including a lengthy presentation by the dispatcher. I think the video will help answer a lot of questions, and it is $30 US, a very good deal IMO.

www.worldairroutes.com

They have a lot of great videos there. Any true aviation enthusiast should have this site bookmarked.


User currently offlineAR385 From Mexico, joined Nov 2003, 5943 posts, RR: 30
Reply 9, posted (1 year 3 months 2 days 3 hours ago) and read 2211 times:
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It´s usually due to winds.


MGGS
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