(2013) Service Advisory 1308 Rev A: GNS 480 (CNX80) Units with Software Version 2.1 and Aviation Database 1302

AFFECTED PRODUCTS

GNS 480 (CNX80) Units with Software Version 2.1.

DESCRIPTION

The latest Aviation Database (1302) includes LP* approaches for the first time. While GNS 480 (CNX 80) Software Version 2.3 supports LP approaches, Software Version 2.1 does not.

For customers with Software Version 2.1, LP approaches will appear as LPV approaches and will be selectable. If selected, the unit will annunciate “LPV” in amber while on the approach; however, one minute out from the FAF the approach will downgrade to LNAV.

PILOT ACTION

Garmin recommends upgrading 480 (CNX80) Units to Software Version 2.3. Refer to Software Service Bulletin 0850 Rev C for instructions on updating to 2.3.

*LP or Localizer Performance, is a newer procedure that uses WAAS to deliver the same high precision
as LPV but for lateral guidance only.