What was found
AUTOTHROTTLES DISENGAGED. WOULD NOT RE-ENGAGE. ACFT GROUNDED . PERFORMED AUTOTHROTTLE SYSTEM TEST IAW MM 22-31-00-710-802, NO DEFECTS NOTED. DFCS LRU INTERFACE TEST FOR FCC, AUTOTHROTTLES GOOD, BITE NR 35, IAW MM 22-11-33. HGS SENSOR TEST FOR FCC - AUTOTHROTTLES GOOD IAW SMM 34-36-00. LAND VERIFY TEST GOOD BITE NR 49 IAW MM 22-11-00. ETOPS GROUND VERIFICATION TESTS SUCCESSFUL. ACFT CAT STATUS UPGRADED TO CAT IIIA A/L, HGS QUALITY LWMP STATUS PLACARD CHECKED. STATUS SCREW IS IN CATIIIA A/L, HGS QUALITY POSITION.