Garmin’s high-spec mini-EFIS, which fits into a conventional large instrument hole, has been approved for helicopter applications as a multi-function display, CDI and replacement radar altimeter display. According to Garmin, the 275 has “completed stringent helicopter vibration and temperature testing, demonstrating it can withstand the harsh operating environments encountered by helicopters.” Garmin continues to work on approvals for the unit to act as a primary attitude indicator and/or HSI in rotary-wing aircraft, expecting those to be finished by the end of the year.
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/garmin-introduces-helo-specific-gi-275-efis