Hi,

Club aircraft has a GARMIN GNC 300XL TSO which according to the spec, has a
PC interface. Is there any software out there that I can run from a PC to
enter routes, waypoints etc directly into the device? Having a PC interface
is one thing, being able to use it without resorting to the SDK is another.

Not sure whether the device came with the appropriate cable, but I assume
you can buy one from Garmin.

Any help/advice appreciated.

Thanks,
Kevin