Filing to a point in space


How do you file to a point in space? The Destination field only accepts a ‘KSFO’ type identifier. If you need to file to say ‘FMG330030’, the Mustang VOR 330 degree radial at the 30 n.mi. fix - how do you do this??


Are you filing IFR on DUATS or something? I’ve just opted to file IFR from the nearest airport and advise the controllers where my flight plan is filed.


Filing to a point in space? Like KMHT direct the Horse Head Nebula?