Garmin GTN Xi Series Maintenance Manual page 44

Item
The GTN Xi, GMA 35 (if installed), Flight Stream 210 (if installed),
Flight Stream 510 (if installed), switches, and wiring harnesses
should be inspected to ensure continued integrity of the
Visual Inspection
installation. These items must be inspected in accordance with
Section 4.4.
190-01007-C1
Rev. 1
Description/Procedure
GTN Xi Part 23 AML STC Maintenance Manual
Interval
12 Calendar
Months
Page 4-4