Avionics repair, exchange or replacement: prepare the right decision
https://fly-supply.net/en/guides/avionics-repair-exchange-replacement

Your enquiry checklist
[ ] Model, P/N and S/N
[ ] Observed issue and when it occurs
[ ] Purchase, warranty or previous service record
[ ] Aircraft and installed configuration
[ ] Required date and acceptable options
[ ] Written return/RMA and offer terms before shipment

Use this guide to prepare a request. Exact suitability, installation eligibility, applicable documentation and service scope are confirmed for the specific equipment and application.