(2025) Service Bulletin 25003 Rev A: GTR™ 205 COM Transceiver/GNC® 215 VHF NAV/COM Radio Main Software Version 2.22

PRODUCTS AFFECTED:

GTR 205 and GNC 215 products listed below are affected.

Table 1. Product Affected

CERTIFICATION AUTHORIZATION:

TSO Authorization

COMPLIANCE:

Optional: This Service Bulletin may be incorporated at the owner’s discretion and is not warranty reimbursable.

DOCUMENTATION CONSIDERATIONS:

The GTR 205/GNC 215 Pilot’s Guide (Garmin P/N 190-02766-02) Rev B has been released to reflect changes in Software Version 2.22 and is to be provided to the owner/operator.

PURPOSE:

GTR 205/GNC 215 Main Software Version 2.22 adds the following:

• 2-place intercom system (GTR and GNC)
• 3D audio (GTR 205 only)
• Bluetooth media and calling (GTR 205 only)
• Improved interface to G3X Touch for radio and audio controls (GTR 205 only)
• Auxiliary audio inputs for other radios, alerts, music, etc (GTR 205 only)
• Allow frequency information to come from an external LRU instead of a database in the GTR/GNC

WARRANTY INFORMATION:

This modification is not warranty reimbursable.