Sorry if this is a basic question. I planned a flight that includes a long west-bound stretch though Algeria and Morocco on airway UA411. The aircraft is a B744.

 

PFPX planned an altitude of  FL410 for that part, and I'm having a bit of trouble understanding why that altitude was chosen. A non-RVSM altitude should be either FL390 or FL430 for that part, while RVSM should be FL400, unless I'm mistaken, which may be the case.

 

I was flying at FL410, when (through RealTraffic) I noticed an actual real-world aircraft at my altitude heading eastbound on the same airway, also at FL410, which would be the appropriate altitude for eastbound traffic using RVSM, so I had a TCAS resolution advisory and had to climb out of its way.

 

My questions are these:

 

1. Any idea why PFPX planned my flight for FL410 going westbound? and...

2. Does PFPX "know" what parts of the globe are RVSM-capable and does it take that into account?

 

Thanks guys.

 

 

I get an even level Will, which airac and provider ?

 

Could you post the ofp.

 

Yes PFPX is aware of available levels dictated by a cruise table code.

I don't have a PDF of the whole OFP but here is a pic just after that stretch of the flight. On a new airway here, but as you can see, the direction is still west (roughly 220 degrees) and the altitude is still FL410. (I'm not sure how helpful one page of the OFP is, but at least you can check whether I'm hallucinating.)

 

Navigraph is the provider, the cycle is current.

 

That segment is on UG850 which is flown at ODD levels, checked against the Morocco AIP

Thanks, Stephen. What is AIP, and how can I check it myself? Might save me some time in the future.

 

I appreciate your help.

 

 

4 minutes ago, Will C said:

Thanks, Stephen. What is AIP, and how can I check it myself? Might save me some time in the future.

 

I appreciate your help.

 

 

https://en.wikipedia.org/wiki/Aeronautical_Information_Publication

and where to get it:
https://www.eurocontrol.int/articles/ais-online

AIP = Aeronautical Information Publication and produced by the relevant country body.

 

Eurocontrol provide a nice country index World AIP

 

Some require a registration to access, where possible acccess the EAIP. Enroute airways listed under section 3

Here is the extract for UG850:

 

Thanks, that's helpful.