Charts with airport identifiers that include numbers

[boctal]

Airports in the US that include a number as part of their identifier, e.x. C56, are unable to be loaded into the avionics chart system. I can't find anything in the documentation that would prohibit loading of these charts. This occurs regardless of the airport being the departure, destination, alternate, or "other airport."

[AirBadger]

I ran into this as well with the same airport.