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Filing for a Lat/Long

Every year I fly from my home base at Rock Hill, S.C., to Fond du Lac, Wisc., for the Oshkosh AirVenture fly-in. I normally take a route east of both Cincinnati and Chicago, which takes me over Lake Michigan. As I near the lake, I always get the following re-route: Cleared direct Pullman, then via the Pullman 333 radial to intercept V510, Falls, direct Fond du Lac.

Gemini Sparkle

Key Takeaways:

  • A pilot recounts his annual struggle to program and file a complex, recurring ATC reroute involving VOR radial intercepts into his GPS and traditional flight planning software.
  • He discovered methods to define custom waypoints in his GPS and learned specific FAA flight plan filing formats, such as VOR radial/distance (e.g., PMM333064) or latitude-longitude coordinates (e.g., 4325/8646).
  • While older software presented challenges with these formats, modern applications like ForeFlight now automatically code complex user waypoints into the correct latitude-longitude format, significantly simplifying flight planning and filing.
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Sometimes just knowing the preferred route isn’t enough. You need the secret code for putting that route into the system.

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