What was found
LH INB AILERON POSTION INDICATION SHOWS RETRACTED ,WHEN, FLAPS SELECTED TO 5. AIRCRAFT RETURNED TO BLOCK AND GROUNDED BY MAINTENANCE. LEFT INBD AILERON IS IN CORRECTED POSITION AND THE RIGHT INBD AILERON IS NOT. PERFORMED A CHECK ON THE ANGLE GEARBOX INDEX MARK IAW AMM 27-51-40 PG 408. FOUND AILERON INDEX MARKS NOT IN CORRECT POSITION RIGGED RIGHT INBD AILERON DROOP ANGLE GEARBOX IAW 27-11-00. OPS CHECK GOOD IAW RII 27-03 AND AMM 27-11-00. AIRCRAFT RELEASED FOR SERVICE