ACR X DSCNT THROUGH OCCUPIED ALT HAD LTSS FROM ACR Y. SYS ERROR.

Narrative

ACR X DSNDING TO FL180 WITH NO XING RESTRICTION PER SOP CHKED ON AND WAS IMMEDIATELY ISSUED A CLRNC TO 140 WITH ALTIMETER SETTING AND GIVEN LEAVING 160; CLRED DIRECT TO ATR VORTAC. ACR X WAS ADVISED OF SLOWER TFC NBOUND AT 170 WHICH WAS ACR Y LEAVING FL180 15 MI FROM ACR Y. ACR X WAS ISSUED THE TFC AND GIVEN AN INCREASED DSCNT RATE. ACR Y CHKED ON AT 170 AND FOR ADDED SEPARATION ASSURANCE; TURNED R HDG 095 DEG AND ACR X R HDG 300 DEG 8-10 MI FROM CONFLICT POINT. ACR X MODE C DISPLAYED 163. WHEN ASKED IF LEVEL 160; ACR X DELAYED HIS RESPONSE AND SAID 300 FT TO GO. FOR THE NEXT 8-10 MI; MODE C ON ACR X DISPLAYED 163; THROUGH CONFLICTION POINT WITH ACR Y DURING THIS TIME FRAME; MIL Z POPPED UP 5-6 MI W OF SMT FL210 DSNDING TO 110 ALSO IN CONFLICT WITH ACR X DSNDING TO 140. ACR X WAS REISSUED AN ALT OF 160 VERSUS 140 TO AVOID CONFLICTION WITH MIL Z. MIL Z WAS POSITIONED 15 MI AHEAD OF ACR X XING L TO R. COMS WERE NOT ESTABLISHED WITH MIL Z. THEREBY CAUSING ACR X TO BE ISSUED THE AMENDED ALT OF 160; THEREBY CAUSING ACR X TO STOP DSCNT EARLY.