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Brian Bowen of Project Kitfox installs and demonstrates a GRT Discovery ADS-B receiver.

GRT Avionics Service Bulletin – 10.1 Series EFIS Mod A, March 28, 2022

This service bulletin is for the field repair of 10.1 series EFIS displays. This repair is an authorized customer installed modification. It requires approximately 10 minutes to complete. Contact GRT Avionics to receive modification parts free of charge. If you do not feel you have the ability to perform this modification, fill out a Service Request Form available on our website and send the EFIS to GRT Avionics. GRT Avionics will modify the EFIS and return the EFIS to the customer free of charge (ground shipping only).

Issue

It has come to our attention that some 10.1 series displays may have intermittent side row button functions.

Affected Units

All Horizon 10.1 and Sport 10.1 EFIS models with serial numbers between 3000 and 3140. Check your EFIS ID plate. If it has a hole thru the ID plate in the “Mods” section, where the “A” was or if the “A” is scribed out, your EFIS has already been modified and no further action is necessary.

Repair action

The modification requires the installation of two insulating shims between the rear cover and main circuit board. This modification is known as “Mod A”.

10.1 Series EFIS Mod A Instructions

Trig TY91 Supplement_Rev D

Our offices will be closed on Thursday November 25, and Friday November 26 for the Thanksgiving holiday.

Sandy Bacon, well known to thousands of our customers as the voice of EIS support and sales, passed away on August 13, 2021. She joined the company as its second employee in 1994, and was a dedicated employee and friend to those of us at GRT, and to so many of our customers. Her contribution to our lives will always be appreciated. We will miss her.

We will be hosting a live Q & A session via Zoom on Wednesday April 14 at 7:00 PM EST. Company founder and President, Greg Toman will be demonstrating our EFIS systems as well as answering your questions.

To R.S.V.P, please send an email to liveqa@grtavionics.com along with your questions or areas of operation that you would like to see discussed during the session.

A link to the Zoom meeting will be placed on the front page of our website prior to the session.

We’ve added the convenience of online ordering and streamlined our menus, making it easier for you to find product information. No longer are there separate “Product” and “Support” sections. On our new product pages, you’ll find everything you need – product overviews, manuals and wiring, software, compatible equipment information – all in one place. Additionally, you’ll find a “Buy” tab which will allow you customize your EFIS or EIS order with the options you want.

Due to the State of Michigan executive order 2020-21, a “Stay at Home Order” GRT Avionics will be closed to office traffic for the foreseeable future. We will continue Tech Support by phone and email, with 10AM-12PM and the 2PM-4PM eastern daylight time being the phone hours.

Orders can be placed by phone from 9AM-12PM and 1PM-4PM EDT.

Production, repairs, and product development continues, although may be impacted by supply chain delays related to the Corona virus.

GRT Avionics remains dedicated to the highest level of customer service and will maintain this standard through this trying time. The GRT Avionics team wishes all of it’s customers and families the best of health.