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(2024) Service Bulletin 23121 Rev B: G500(H)/G600/G700 TXi Main Software Version 3.53
PRODUCTS AFFECTED:
Table 1. Products Affected
| System | Model | Appliance P/N |
| G500H TXi | GDU™ 700P | 011-03306-20, -30 011-03306-22, -32 |
| GDU 700L | 011-03307-20, -30 011-03307-22, -32 | |
| GDU 1060 | 011-03308-20, -30 011-03308-22, -32 | |
| G500 TXi | GDU 700P | 011-03306-20, -30 011-03306-22, -32 |
| GDU 700L | 011-03307-20, -30 011-03307-22, -32 | |
| GDU 1060 | 011-03308-20, -30 011-03308-22, -32 | |
| G600 TXi | GDU 700P | 011-03306-60, -70, -80, -A0 011-03306-62, -72, -82, -A2 |
| GDU 700L | 011-03307-60, -70, -80, -A0 011-03307-62, -72, -82, -A2 | |
| GDU 1060 | 011-03308-60, -70, -80, -A0 011-03308-62, -72, -82, -A2 | |
| G700 TXi | GDU 700P | 011-03306-B0, -C0 011-03306-B2, -C2 |
| GDU 700L | 011-03307-B0, -C0 011-03307-B2, -C2 | |
| GDU 1060 | 011-03308-B0, -C0 011-03308-B2, -C2 | |
| EIS TXi | GDU 700P | 011-03306-00, -10 011-03306-02, -12 |
| GDU 700L | 011-03307-00, -10 011-03307-02, -12 |
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:
Optional: TSO Service Bulletin 23121 may be incorporated at the owner’s discretion and is not warranty reimbursable.
DOCUMENTATION CONSIDERATIONS:
The G500(H)/G600/G700 TXi Pilot’s Guide (190-01717-10) Rev N is to be provided to the owner/operator if not already provided.
PURPOSE:
G500(H)/G600/G700 TXi Main Software Version 3.53 contains the following changes:
- Fixed an issue where the traffic page On Scene annunciation was not legible (G500H Only)
- Added support for -X2 part number GDUs
NOTE
Database sync routing is affected by this change. Systems with GTN™ 6XX/7XX Touchscreen Avionics (v6.72 or earlier) or GPS 175/GNC® 355 Radio/GNX™ 375 IFR Navigator (v3.11 or earlier) interfaced to G500(H)/G600/G700 TXi (v3.50 or later) or GI 275 (v2.60 or later) no longer support database sync. Databases will need to be loaded onto each GTN and GPS 175/GNC 355/GNX 375 unit. This has been fixed in GTN software v6.73. This limitation will be fixed in future GPS 175/GNC 355/GNX 375 software versions.
WARRANTY INFORMATION:
This modification is not warranty reimbursable.