Route: KSAN/27 ZZOOO4 MTBAL DCT CADEZ DCT HAKMN Q73 LAKRR DCT MLF DELTA6 KSLC/34L
Fenix A321 CFM SL no ACT.
Here’s the PDF https://www.simbrief.com/ofp/flightplans/KSANKSLC_PDF_1731717964.pdf
Hi,
Looking at the flight plan, you’re reaching TOC between CADEZ and HAKMN. The track between these 2 waypoints is somewhere around 358.6 degrees magnetic, which puts you technically westbound until you pass HAKMN.
I’ve checked a few other magnetic declination calculators online and also double checked the calculated track between these 2 waypoints, as far as I can tell 358.6 degrees magnetic is correct. So SimBrief is working as designed as far as I can tell. 
Best regards,
Ah, that’s interesting. As far as real life (FAA ATC) goes, the DOF is calculated by the direct heading instead of the route track heading if that can be implemented.
There’s no way it’s that simple though? Take for example a flight that’s on a weather avoidance route that takes it 400 miles north-eastbound, then 500 miles north-westbound. I can’t imagine that ATC would leave the flight at an even altitude when flying the initial eastbound leg, even if the destination was technically west of the departure?
But regardless, most real-world flight planners seem to plan altitudes using the leg-by-leg rule, so I think SimBrief should do the same. What ATC actually ends up assigning is a different matter, and not a big deal if it doesn’t match up with the plan exactly (happens all the time in real life).
I imagine that for some routes, dispatchers might take into account LOAs or SOPs when choosing altitudes. Perhaps that’s what’s happening in this case, but currently there isn’t any way to hard-code such rules into SimBrief unfortunately.
I’ve made a note to look into this closer when I have more time, maybe this situation can be handled better. It might seem obvious that this route should just keep an odd altitude the whole way, but it isn’t easy to make a computer program think like a human. 
Best regards,
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