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(2023) Service Advisory 23070 Rev B: RNAV approaches
REVISION B:
Added Resolution
PRODUCTS AFFECTED:
All GI 275 products with software versions 2.52 and later, interfaced with a GFC 500 autopilot are affected.
ISSUE:
When attempting to ARM a GPS approach for GPS/GP, the GI 275 may instead ARM the ILS approach LOC/GS.
ACTION:
For GPS approaches, tune the NAV source to an unused NAV frequency before arming the GPS Approach.
RESOLUTION:
This has been fixed in GI 275 System Software Version 3.01. Refer to Garmin TSO Service Bulletin 23087.