ng System from a software version 104-104 to 218-218 UAW Gulfstream STC ST01851AT-D and Gulfstream Custom Engineering Drawing List CE41 4960458 and EGPWS Windshear (218-218) (MOD) Electrical Drawing CE41 3490238 approved under FAA Form 8110-3 dated 9/17/07. Updated Flight Manual Supplement with Gulfstream G-IV