What was found
ON APPROACH LOWERED FLAPS TO 15 DEG AND RECEIVED A STALL IDENT LIGHT ON MASTER CAUTION PANNEL AND A FLAP LIGHT ABOVE CAPTAINS PRIMARY FLIGHT DISPLAY. LANDED FLAPS 15 DEG AT SHUTDOWN BOTH LIGHTS EXTINGUISHED. LT FLAPS AT 15 DEG, REPEAT WRITE-UP. VERIFIED DISCREPANCY. TROUBLESHOT & ACCESSED SYS. UPON SYS INSP FOUND RT OTBD FLAP SWITCH GAP OUT OF TOLERANCE. RE-ADJUSTED/RIGGED RT FLAP OTBD SWITCH IAW MM CHAP 27-33-23-501. SYS OPS CHECK GOOD AT THIS TIME.