Yes, the Bendix/King KPI-553A can display the distance information output from the Garmin GNS-430 BUT only with the use of the Garmin GAD-42 Adapter. The KPI-553A uses King Serial Data/Clock for its distance information format. The GNS-430 outputs ARINC 429 distance information. The GAD-42 is required with this interface to convert the ARINC 429 Distance Label to the KING Serial Data/Clock Distance information