COMPLIANCE

Mandatory

PURPOSE

This Service Bulletin announces the availability of GDU 620 Software Version 5.02, GRS 77 AHRS Software Version 3.02, and GDC 74 ADC Software Version 3.08, for use with G600 systems.

GDU 620 Software Version 5.02 contains the following changes from version 5.01:

Added support for S-TEC 1500/2100 autopilots (requires enablement card)

GRS 77 Software Version 3.02 contains the following changes from version 3.00:

Corrected issue related to possible temporary loss of heading/attitude information following extended power-on stall maneuvers (reference Service Advisory 0914)
Corrected issue related to momentary loss of GRS 77 function (reference Service Advisory 1129)

GDC 74 Software Version 3.08 contains the following changes from version 3.06:

Corrected issue related to momentary loss of GDC 74A function (reference Service Advisory 1129)