The GI 275D is designed to be dissimilar from other Garmin primary flight display (PFD) systems and ADAHRS systems for applications with such requirements. Approved with Designed Assurance Level (DAL) A, the GI 275D is ideal for retrofit installations in Part 25 aircraft.

The GI 275D can display either internal or external AHRS and ADC sources but has no sensor reversion capabilities. The GI 275D is a dedicated ADI that can be configured for both 3 in 1 or 4 in 1 operations. Additionally, the GI 275D can act as a dissimilar standby flight display for certain applications.