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tb727
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Oceanic Deviations

Tue Sep 11, 2012 9:37 pm

I've been sitting in a hotel too long and dreaming of flying the 727 in the South Pacific like we have in the past(I didn't personally get to but I would like to try it) and it got me thinking about getting around storms and build-ups. After a real quick look through my manuals I didn't see anything giving any guidance but I found this online.

How often are the following procedures used by any of you guys that fly an aircraft with legs long enough to cross long stretches of water and have to deviate around weather without being able to raise anyone on the radio?

http://www.faa.gov/pilots/intl/ocean...oceanic_wx_deviation_proc_land.pdf


Darn it, this was supposed to go into Tech/Ops....

[Edited 2012-09-11 14:39:08]
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tdscanuck
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RE: Oceanic Deviations

Wed Sep 12, 2012 1:07 am

Quoting tb727 (Thread starter):
How often are the following procedures used by any of you guys that fly an aircraft with legs long enough to cross long stretches of water and have to deviate around weather without being able to raise anyone on the radio?

I've used the in-contact procedures lots of times while flying around the South Pacific in the summer...thunderstorms everywhere. I don't think I've ever lost both CPDLC and HF at the same time so never had to use the out-of-contact procedures. We did do one test where we thought we'd lose all radios due to overheat, notified ATC in advance, and were prepared with the no-contact procedures but didn't end up having to use them.

Tom.
 
HAL
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RE: Oceanic Deviations

Wed Sep 12, 2012 3:31 am

I've had to deviate many times while flying around the Pacific. Fortunately, I've never been out of contact with ATC, and the deviation has never snuck up on us so suddenly that the 'Pan Pan Pan' radio call was necessary. Thunderstorms don't just magically appear - there's always warning before you're on them. The farthest off the route I've had to go is just short of 100 miles while flying SYD-HNL. It was the middle of the night near Fiji, and a long string of storms sat on top of the islands - and our planned route. We just looked at the radar, and chose a reroute that took out some of the dogleg over Fiji, and actually shortened the flight.

As part of our recurrent training we always go over the 'no contact' rules too. It's actually easy to remember if you just think of the phrase 'The South Shall Rise Again'. This means that if you're deviating on the south side of your planned route, you go up 300 feet once you're more than 10 miles from the route (or descend 300 feet if going north). Easy as pie.

HAL
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tb727
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RE: Oceanic Deviations

Wed Sep 12, 2012 4:36 am

Quoting HAL (Reply 2):
As part of our recurrent training we always go over the 'no contact' rules too. It's actually easy to remember if you just think of the phrase 'The South Shall Rise Again'. This means that if you're deviating on the south side of your planned route, you go up 300 feet once you're more than 10 miles from the route (or descend 300 feet if going north). Easy as pie.

Ah perfect that makes sense, I guess at HAL you would travel the area I would like to frequently. I figured it being the tropics you would see some big storms out there. Thanks!

The only "Oceanic" I have done so far is over the North Atlantic in Lear 36's, not exactly the best long range airplane. The 727 isn't much better as far as range but at least we can walk around and stretch!
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wilco737
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RE: Oceanic Deviations

Wed Sep 12, 2012 6:10 am

I haven't done many deviations yet. I only flew twice over the Pacific ocean and the North Atlantic is not that bad regarding weather. Only a few times I had to deviate from the track, but always had CPDLC oder HF contact with ATC and got a clearance for it.

wilco737
  
 
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tb727
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RE: Oceanic Deviations

Wed Sep 12, 2012 2:08 pm

We also don't have CPDLC, I've only used HF's. From what I understand is that kind of like "texting" center?
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wilco737
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RE: Oceanic Deviations

Wed Sep 12, 2012 3:24 pm

Quoting tb727 (Reply 5):

CPDLC is controller pilot datalink communication. You can type a message and send down to the controller and the other way around. Makes it a lot easier at times. HF quality can be bad.

wilco737
  

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