What was found
WHILE PERFORMING INSPECTION FOR AD 98-06-12, FOUND LATERAL TRIM SPRING ASSY PULLED COMPLETELY OUT OF MOUNTING BLOCK AND DANGLING AGAINST BELLY SKIN. TRIM MOTOR ARM P/N C581-1 FROZEN ON SPRING SHAFT. SUBMITTER STATED HAD THIS UNIT FAILED IN-FLIGHT, LOSS OF CONTROL WOULD HAVE BEEN POSSIBLE. THE REPLACEMENT SPRING ASSY LOWER BEARING IS STAKED INTO THE MOUNTING BLOCK, YET THIS IS NOT THE CAUSE OF THE AD. SUBMITTER RECOMMENDED REVISION OF AD 98-04-12 TO REQUIRE IMMEDIATE REPLACEMENT OF AFFECTED SPRING ASSY REGARDLESS OF SHAFT WEAR.