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(2023) Service Bulletin 23076 Rev B: GTX™ 45R/GTX 345 Series ADS-B Software Version 3.51
PRODUCTS AFFECTED:
The following GTX 45R/GTX 345 series units are affected:
Model | Appliance P/N |
GTX 345 | 011-03302-0( ) |
GTX 345 GPS | 011-03302-4( ) |
GTX 345R | 011-03303-0( ) |
GTX 345R GPS | 011-03303-4( ) |
GTX 345 NV | 011-03302-2( ) |
GTX 345 NV, GPS | 011-03302-6( ) |
GTX 345D | 011-04333-00 |
GTX 345DR | 011-04334-00 |
GTX 45R | 011-04287-0( ) |
GTX 45R GPS | 011-04287-4( ) |
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 TSO Service Bulletin 23076 is recommended at the next scheduled maintenance interval.
DOCUMENTATION CONSIDERATIONS:
The current revision of the GTX 3X5 Series Pilot’s Guide (Garmin P/N 190-01499-00) Rev G is applicable. Pilot Guides are available at www.garmin.com/manuals.
PURPOSE:
GTX 45R/GTX 345 Series ADS-B Software Version 3.51 contains the following changes:
- Expanded GTX AHRS availability to all aircraft categories, including rotorcraft.
- Improved the AHRS calibration procedure and calibration validity checks.
- Corrected an issue where assert log information could not be downloaded using HSDB.
- Expanded support for flight data log retrieval using HSDB.
- Expanded support for transponder health diagnostic information to be transmitted using HSDB.
- Added TCAS II operating modes to be forwarded via HSDB for integrated traffic display support.
- Expanded support for sourcing of different sensor data for additional systems that have a pilot/copilot flight director transfer switch.
- Expanded flight data logging capability to include internal AHRS data.
- Improved the ADS-B SURF application status reporting.
- Addressed a timing issue that could result in TAS/TCAS-only targets being temporarily removed from the traffic display intermittently.
- Corrected an issue where daily NOTAM TFRs were only displayed on the first day that they were published. Daily NOTAM TFRs are now displayed until they are no longer active.
- Updated aural alert processing to use a heading-based bearing for TAS/TCAS targets. This now matches functionality for ADS-B targets and improves directional callout accuracy primarily for rotorcraft.
WARRANTY INFORMATION:
This modification is warranty reimbursable with a deadline of May 31, 2024.