Hawaii Turns
11-04-2013 | 03:19 PM
#21
Don't say Guppy
Joined: Dec 2010
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From: Guppy driver
gcmap.com
Put in IAH-SYD or IAH-AKL. At the bottom are different controls. Select 180 minute ETOPS and 777 aircraft. Both of these routes go right through a "no-go" area in the central pacific. There are also 180 no go areas in the south Atlantic and Indian Ocean. There are polar routes that are also no go if 1 or 2 airports are not suitable.
Hence Boeing and Airbus spending millions for 330 minute ETOPS on some aircraft. There is a market for them.
Put in IAH-SYD or IAH-AKL. At the bottom are different controls. Select 180 minute ETOPS and 777 aircraft. Both of these routes go right through a "no-go" area in the central pacific. There are also 180 no go areas in the south Atlantic and Indian Ocean. There are polar routes that are also no go if 1 or 2 airports are not suitable.
Hence Boeing and Airbus spending millions for 330 minute ETOPS on some aircraft. There is a market for them.
11-04-2013 | 04:09 PM
#22
Gets Weekends Off
Joined: May 2009
Posts: 2,032
Likes: 18
11-04-2013 | 04:48 PM
#23
Don't say Guppy
Joined: Dec 2010
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From: Guppy driver
Not sure. I did some very far north routes on the 777 back 13 years, but never polar routes. I just remember hearing that some of the routes had only a few alternates and if one went down you had to fly a different route. There are several airports up north of 60 deg. But if one goes down, the next suitable airport might be 70 E or W of that longitude. It might not be apparent to line pilots, as dispatch might give you different routing. I can't swear to this one.
The ETOPS no go areas in oceanic regions I do know about. They never affected UAL until IAH-AKL or SYD. LAX and SFO flights fly north of this area on a pure great circle route. Obviously different wind components could put the best route through this area.
The ETOPS no go areas in oceanic regions I do know about. They never affected UAL until IAH-AKL or SYD. LAX and SFO flights fly north of this area on a pure great circle route. Obviously different wind components could put the best route through this area.
11-05-2013 | 08:16 AM
#24
Gets Weekends Off
Joined: May 2009
Posts: 2,032
Likes: 18
Not sure. I did some very far north routes on the 777 back 13 years, but never polar routes. I just remember hearing that some of the routes had only a few alternates and if one went down you had to fly a different route. There are several airports up north of 60 deg. But if one goes down, the next suitable airport might be 70 E or W of that longitude. It might not be apparent to line pilots, as dispatch might give you different routing. I can't swear to this one.
The ETOPS no go areas in oceanic regions I do know about. They never affected UAL until IAH-AKL or SYD. LAX and SFO flights fly north of this area on a pure great circle route. Obviously different wind components could put the best route through this area.
The ETOPS no go areas in oceanic regions I do know about. They never affected UAL until IAH-AKL or SYD. LAX and SFO flights fly north of this area on a pure great circle route. Obviously different wind components could put the best route through this area.
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