Garmin SB1302 Rev A: G500 AML STC update for GDU 620 Software Version 6.11, GRS 77 Software Version 3.03, and GDC 74 Software Version 3.09 – Aero-Pro Avionics LLC
Garmin GDC 74A Air Data System - Part Number: 011-00882-10 (HIRF), Unit Condition: Serviceable
011-00882-10 Garmin GDC 74A Digital Air Data Computer
Garmin GDC 74A P/N 011-00882-10 -
GDC 74(X) | Manualzz
011-00882-10 | GARMIN GDC 74A | Davis Aviation, Inc.