My understanding is that in the USA altitudes are assigned at or above FL 410 as: Track 000-179 degrees FL 410, 450, 490, etc; Track 180-359 degrees FL 430, 470, 510, etc.  P2A evidently does not follow this convention.  For example, tried this morning to enter FL 430 for a flight heading west; the flight plan wouldn't take it, P2A changed it to FL 440.

Alan

To plan a flight above FL400 or for locations around the world that have different rules from the US, just check the option on the Flt Pln tab of config "ATC Ignores Bearing Based Altitudes".

Dave

Thanks, Dave, for the quick response.  That will solve all problems, except when I get careless and plan for east when I'm going west; I've done it before.  Loving the program.

Alan