STC for the GTN series on rotorcraft

Garmin gets an AML STC for the GTN Series on Rotocraft

Thanks to Garmin and Lucy’s logbook, we were able get more information on the buzz about this STC.

This community is so excited to hear that Garmin has recently obtained an AML (Approved Model List) STC (Supplemental Type Certificate) for Part 27 rotorcraft for

GTN - Helithe GTN series, which allows for the installation of the GTN 650/750 and GMA 35 remote audio panel into approved rotorcraft.

Rotorcraft listed below are approved under the latest series of certification:

  • Bell 206B, 206L, 206L-1, 206L-3, 206L-4, and 407 series
  • Eurocopter AS350B2, AS350B3, EC130B4, EC130T2
  • MD Helicopters 369E, 369F, 369FF

As part of the GTN Part 27 AML STC, HTAWS (Helicopter Terrain Awareness and Warning System) is included for the listed models. HTAWS offers pilots an enhanced level of situational awareness through forward-looking terrain and obstacle avoidance (FLTA) alerts. Garmin HTAWS also incorporates a high-resolution, five color terrain scale (red, orange, yellow, green, and black) and offers voice callouts in one hundred foot intervals when descending from 500 to 100 feet Above Ground Level (AGL).

GTN Heli-3 Also included is the approval for Telligence™ Voice Command for some models listed within the AML. Simply put, Telligence speech recognition technology allows pilots to active audio panel functions via spoken commands. For example, by activating the push-to-talk button on the controls and saying, “Comm One,” the pilot can easily select the radio without taking his/her hands off the flight controls.

As your local Garmin dealer, don’t hesitate to call us or come in and talk to us about this STC.


Maxcraft Avionics is a leader in airplane and helicopter avionic system upgrades like the Garmin GTN series, including installation of everything from a basic VHF Radio and simple Garmin portable GPS all the way to TCAS, EFIS, and autopilot systems. We have the largest avionics facility in Canada and we have over 20,000 unique part numbers in our in inventory to repair your aircraft or upgrade your cockpit.

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