Flight Crew Flight Instructor; Flight Crew Air Transport Pilot (ATP); Flight Crew Glider; Flight Crew Multiengine; Flight Crew Instrument
Flight Crew Last 90 Days 30; Flight Crew Total 3500; Flight Crew Type 250
Confusion; Human-Machine Interface
Aircraft Equipment Problem Less Severe
General None Reported / Taken
Aircraft
On left base to SAV Runway 10; Garmin G3X touch gave a message 'Savannah Class D within 10 minutes.' I was already in SAV Class D (inner part of Class C; maybe?) or perhaps the system suddenly decided I was headed to SVN -- which is universally known as Hunter (Army Air Field); but which some Fed decided should be called Savannah on the charts -- greatly adding to potential confusion; not only on this message but also when searching for nearest airport. The message did not say exactly which airport; only an airport name -- which was ambiguous. Garmin has been advised of the potential ambiguity; and the ludicrousness of this message (500 feet AGL descending and I get a message about Class D?). The naming ambiguity has been previously reported. No point in waiting to fix it till somebody gets a pilot deviation because the airport names are similar/ misleading/confusing.
Pilot reported his Garmin G3X gave an airspace warning for Savannah Class D when he was already well within that airspace. Pilot asked if it was possible the warning was for SVN airport; which could be a confusing scenario for pilots.