PRODUCTS AFFECTED:

GTR 205 and GNC 215 products listed below are affected.

Table 1. Product Affected

Model	Appliance P/N
GTR 205	011-05287-00
GNC 215	011-05289-00

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.