What was found
21AUG ON SHORT FINAL, RIGHT MAIN GEAR GREEN LIGHT FLICKERED RED/GREEN AND THE WARNING HORN SOUNDED INTERMITTENTLY. GEAR RECHECKED, DID GO-AROUND, TOWER OBSERVATION ACCOMPLISHED. UNEVENTFUL LANDING. 22 AUG, ON APPROACH, RIGHT MAIN GEAR LIGHT FLICKERED RED/GREEN/RED WITH INTERMITTENT WARNING HORN AT 500 FEET. RED GEAR LIGHT STAYED ON WITH CONSTANT WARNING HORN. ON GO-AROUND, NORMAL INDICATIONS RETURNED. 21 AUG, INSPECTED RIGHT MLG DOWNLOCK SENSOR. GOOD FOR SERVICE. FOUND SENSOR GAP DISTANCE GREATER THAN NOMINAL. ADJUSTED IAW MM 32-61-31 AND 32-61-00.