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(2024) Service Bulletin 24074 Rev A: G3X Touch Software Version 9.18
PRODUCTS AFFECTED:
G3X Touch systems installed using Approved Model List (AML) Supplemental Type Certificate (STC) SA01899WI are affected.
CERTIFICATION AUTHORIZATION:
STC SA01899WI MDL Revision 18
COMPLIANCE:
Optional: This Service Bulletin may be incorporated at the owner’s discretion and is not warranty reimbursable.
DOCUMENTATION CONSIDERATIONS:
As a result of changes related to this update, the applicable documents listed in Table 1 are required to be issued to the aircraft operator/owner before the aircraft is returned to service.
Table 1
| Document Title | Part Number | Revision (or later) |
| Garmin G3X Touch EFIS Part 23 AML STC Maintenance Manual Contains Instructions for Continued Airworthiness | 190-02472-02 | 10 |
| Airplane Flight Manual Supplement or Supplemental Airplane Flight Manual for the Garmin G3X Touch Electronic Flight Instrument | 190-01754-01 | 6 |
| G3X Touch Pilot’s Guide for Certified Aircraft | 190-02472-00 | F |
PURPOSE:
This STC amendment approves the following:
- G3X Software Version 9.18 (includes G5 Software Version 8.27 and changes listed here: https://www8.garmin.com/support/download_details.jsp?id=14567)
- Installation of updated GEA™ 24B Engine Interface Module Garmin part number 011-05991-01 with Mod 1 marking.
NOTE
The Mod 1 hardware resolves the issue described in Garmin Service Letter 24035 and Service Advisory 24032 where voltage transients on CHT #5 and 6 may result in red X’d engine gauges with a GEA 24B Mod 0 unit. The GEA 24B Mod 1 can be used for new installations or to replace an existing Mod 0 unit.
- Installation of optional Garmin Restrictor part number 117-02083-00 to smooth manifold pressure indications.
WARRANTY INFORMATION:
This modification is not warranty reimbursable.