Which one is correct?

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So which one is the one that I follow. I got both from this community so can this community tell me which one is valid. Thank you all very much.

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Use the every 2000 one.

The 4000 above FL290 is for non-RVSM airspace, which, with advances in instrumentation is virtually non-existent anymore.

0/360-159: Odd flight levels, even above FL290.
180-359: Even, above FL290 as well.

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If you look closely at the images you will see below the title what altitude range they are for. Both are correct, just at different heights.

Yes, I looked closely before I posted it. My issue is with the rules ABOVE FL290. One says 4000ft intervals beginning at Fl300 and the other say FL310. Which one is it. Yes, I know that a southwestern heading.

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So youre saying that it’s the Neodd Sweven rule no matter if it’s above FL290?

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Yes, for our purposes it’s fine. The only exception is in non-RVSM airspace, which, again, hardly exists anymore.

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Yeah…I got that. Hence the sentence “even above FL290” in my response.

I know what the confusion is. I’m saying it’s outdated. Just go with odds eastbound and evens westbound. Regardless of flight level. Unless you want to find some non-RVSM airspace near Antarctica or something.

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This isn’t the first time we’ve had this discussion. I think it would be a good idea if @Mark_Denton updated his tutorial to reflect RVSM. Cruising Altitudes

Why his tutorial isn’t incorrect. All the above is correct either stated by Mark in the tutorial, or @Tim_B

Kind of. RVSM is used over 90% of the globe. You know, places like North America and Europe. So Mark’s tutorial is only 90% wrong. Lol. A few months ago when was first learning and reading all the tutorials and watching videos. This really confused me when SimBrief or flight aware would give a cruise altitude that was wrong according to Mark’s tutorial. I think it’s a simple oversight that would be easy to fix so more people don’t get mixed up like @Playr_Mar and I were.

Actually the plane needs to be certified for RVSM not just an airspace so you may have a plane that is certified, and not certified in the same airspace. Again marks tutorial is not incorrect by any means.

Which aircraft that can cruise above FL290 arn’t RVSM certified? I figured we were keeping the fleet up to and well maintained. :) sure it not incorrect. But if you’re going to list one way to do something it would be better if it was the more common way. I’m a huge fan of you and Mark. It’s just my opinion. Reading these forums I’ve learned the even the experts don’t always agree.

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