Perhaps this has been brought up before, but I see that the ILS "beam" data for 
each airport on the mpmap is derived from the runway alignment (as verified in 
taxidraw).  This doesn't allow for magnetic deviation, and therefore all the 
course headings are incorrect.  Makes it tough to line up with the ILS, unless 
you pull info from an outside source (airnav, flightaware, etc) for each 
arrival airport.

Example at KBTV, runway 15 -
mpmap ILS course 130.92 degrees
Flightaware ILS approach plate, 146 degrees.

KJFK, runway 31L -
mpmap ILS course; 301 degrees
Flightaware ILS approach plate; 315 degrees.

I have not looked at the 850 airport format, but is there a way in any of the 
apt.dat or nav data to specify ILS approach data accurately?  Or is this a 
question for Pigeon, to see about using a different data list?  Currently the 
heading data is misleading - it would be better to not have it shown than have 
it incorrect in my opinion.

Thanks!
Peter

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