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(2025) Service Bulletin 25023 Rev A: GTR™ 205 COM Transceiver/GNC® 215 VHF NAV/COM Radio Main Software Version 2.30
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
TSO authorization does not provide installation airworthiness approval. Separate installation airworthiness approval is required for type certified aircraft. Notification of revision to any Garmin STC(s) will be provided under a separate service bulletin.
COMPLIANCE:
Recommended: Compliance with this Service Bulletin is recommended at the next scheduled maintenance interval.
DOCUMENTATION CONSIDERATIONS:
The GTR 205/GNC 215 Pilot’s Guide (Garmin P/N 190-02766-02) Rev C has been released to reflect changes in Software Version 2.30 and is to be provided to the owner/operator.
PURPOSE:
GTR 205/GNC 215 Main Software Version 2.30 adds the following:
- GTR 205 Only:
- Added optional Audio Panel feature enablement for the following new capabilities:
- Dual-COM controls (with failsafe mode)
- 4-place intercom system
- COM Playback
- Fixed the input of the GPS position in installations with GDU or GI displays that are configured for a MapMX input (GNC 215 has supported this previously)
- Reduced audio noise in output to the cabin speaker at the end of a COM radio transmission
- Added optional Audio Panel feature enablement for the following new capabilities:
- Both GTR 205 and GNC 215:
- Fixed synchronization of the COM Channel Spacing setting over the NMEA interface
- Fixed display of the MSG softkey when the count-down timer has expired
- Fixed display of frequencies in the Nearest ARTCC list for stations with more than 50 frequencies, by limiting to the first 50
WARRANTY INFORMATION:
Modification of affected units is covered under the Garmin factory warranty with a deadline of December 31, 2025.