What was found
AFT CARGO DOOR INTERMITENTLY FAILS TO CLOSE LAST 2 INCHES. SUPPLEMENTAL DATA UPDATE LIFT ACTUATOR STOPS BUT HOOK SYTEM FAILS TO ACTIVATE AND PULL DOOR CLOSED. DOOR RIG IS GOOD REF JOB 8-830 OF A CHECK. PROBLEM APPEARS TO NOT BE RIG RELATED. REPLACED HOOK POSITION YABS05 IAW AMM, NO HELP. AFTER SWITCH RPL, HOOK ACTUATOR INTERMITTENTLY OPERATES BEFORE DOOR CLOSES. REF 52-53 FAULT TREE, HOOK POS (PARTIAL) CONT OF AMIS ITEM 3122102. REPLACED AFT CARGO PIT HOOK ACTUATOR.