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SLOP in non oceanic areas

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Old 26th Nov 2012, 15:46
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SLOP in non oceanic areas

Hello all,

Iīve performed a basic search looking for info on applying a SLOP on non oceanic routes but canīt find anything right now, so I might as well ask. I thought I saw in the forum a couple of months ago that a few companies are applying such on all their routes.

Are any of you doing this right now?

My company is thinking about it, and I would like some feedback as to if someone else is actually doing it.

Thanks in advance,

SEQU
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Old 26th Nov 2012, 15:55
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We SLOP in parts of Africa.
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Old 26th Nov 2012, 16:41
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Many do - and very sensibly.
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Old 26th Nov 2012, 18:13
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Africa and some Chinese airways.
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Old 26th Nov 2012, 18:29
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Offsets are very common in China. The difference in China is that they assign a specific offset to each flight. I have heard assignments as much as 15 mi right or left of course (may have been around known weather), though 3 mi is more typical. I do NOT recommend you do your own SLOP.
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Old 26th Nov 2012, 21:00
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Doing SLOP in someones domestic airspace without clearance is not at good idea (most of Africa excluded). I dunno about China.
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Old 26th Nov 2012, 21:12
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I have never understood this - since all the traffic you are likely to collide with will be EXACTLY on the c/line with RNAV etc, it seems 1/2 mile rt is a good place to be?.
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Old 26th Nov 2012, 21:40
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So long as you stay within the airway I think it's a blooming good idea to offset these days. Even at my young age I remember when we used to wait in anticipation for the rad alt to kick as we passed directly overhead opposite traffic and were mostly disappointed. Now if you don't pass directly overhead it's reason to question your navigation.

Fill your boots en-route. But don't forget to cancel when joining the star.
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Old 26th Nov 2012, 21:49
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I have never understood this - since all the traffic you are likely to collide with will be EXACTLY on the c/line with RNAV etc, it seems 1/2 mile rt is a good place to be?.
My Honeywell FMS won't accept an offset of 0.5nm.

Stay on route unless you get a clearance.
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Old 26th Nov 2012, 21:50
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We're advised to offset over Afghanistan.
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Old 27th Nov 2012, 03:23
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On flights to South America we SLOP 1nm Right once we are South of 30 North until established in Atlantic Oceanic Airspace..then Zero SLOP..
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Old 27th Nov 2012, 16:42
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My Honeywell FMS won't accept an offset of 0.5nm
It is not the problem
Use 1 NM (to the right of course)

No ATC will ever have any problem with that.
Even in STAR.
 
Old 27th Nov 2012, 17:17
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Zlin77, are you saying you don't SLOP in Atlantic mnps?
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Old 28th Nov 2012, 04:23
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On The North Atlantic Track System...yes we SLOP...South Atlantic from Dakar to Sao Paulo..no SLOP, just following company procedures.
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Old 28th Nov 2012, 06:09
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according to my present carrier, studies have shown that at least 2nm are required for wake vortex induced chops.
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Old 29th Nov 2012, 22:46
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Thanks for your replies.

Helps a lot.

Saludos,

SEQU
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Old 2nd Dec 2012, 11:02
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Don't do it in Australian airspace without a clearance or they will bust you!!
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Old 2nd Dec 2012, 11:09
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Nitpicker, that's right, a number of years ago in a former airline between NZAA & RKSI, a little HDG select diversion around a CB near Honiara, maybe only 1 mile off track..CPDLC MSG.."Report back on track"..Big Brother IS watching you!!
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Old 2nd Dec 2012, 11:21
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As someone once said "We are cleared airway UB 123, not centreline UB123"
so 1 NM right isnt a bad idea.
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