The FAA certification officially calls it the GT500 .
The aircraft 's nomenclature is unclear as the manufacturer refers to it variously as the GT500 , GT 500 and the GT - 500 .
The FAA certification officially calls it the GT - 500 .
The aircraft 's nomenclature is unclear as the manufacturer refers to it variously as the GT500 , GT 500 and the GT - 500 .