Where to find the semicircular altitudes


just recently I had a close encounter enroute with another plane online. While investigating the cause, I realized, I was on the wrong altitude for the direction I was flying to.
I remember on classic paper enroute charts, there always were the circles with altitudes/ flightlevels for certain directions of flight. The flightlevels according to the semicircular rule. Depending on state if it was north/south bound oriented or west/east bound.
Where do I find this information on my navigraph (enroute) charts?

Thank you in advance

Hi Martin.


It isn’t in the current Charts app.

We are considering a way to add cruising altitude information to the new Charts app currently in development.


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Hi Ian,

Thank you for your reply. It would be great to see this in a future version.

Best regards

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