All GI 275 units installed under Part 23 AML STC SA02658SE MDL Revision 15 or earlier are affected.
Including GI 275 Multi-function Instruments with Expansion Software Version 2.42.
STC SA02658SE MDL Revision 16
MANDATORY: STC Service Bulletin 22002 is mandatory for Dual GI 275 Multi-function Instrument systems (011-04489-10, 011-04489-20) installed as the only means to determine aircraft attitude under the GI 275 Part 23 AML STC SA02658SE MDL Revision 15 or earlier.
Compliance with the service bulletin is recommended for all other installations.
This STC Service Bulletin provides notification of STC SA02658SE Master Drawing List Revision 16 update which includes GI 275 Expansion Board Software improvement to provide additional robustness for the GI 275 ADAHRS solution. Refer to Garmin Service Alert 2182.
This Service Bulletin is warranty reimbursable for GI 275 Multi-Function Instruments described in the Product Affected section only. Warranty reimbursement deadline is June 30, 2022.
Installations completed after January 7, 2022 are not eligible for warranty reimbursement.