What was found
FLIGHT 72 JAX-TPA. ON DECENT A/S INCREASED TO 240 KTS, FLAP LOCK UP LIGHT ILLUMINATED AS WELL AS GREEN LIGHT ON TEST PANEL, FLAP INDICATOR STARTED TO OSCILLATE UP + BACK TO ORIGINAL POSITION. ONCE A/S WAS REDUCED TO LESS THAN 220 KTS. INDICATIONS RETURNED TO NORMAL, INCREASED A/S TO 230 KTS & SAME ISSUE AS BEFORE, REDUCED SPEED AND INDICATIONS RETURNED TO NORMAL. PERFORMED OPERATIONAL CHECK OF THE FLAP CONTROL SYSTEM. OPS CHECK GOOD ON GROUND. WORK DONE IAW AMM 27-51-00-05 NO DEFECTS WAS NOTED AT THIS TIME.