What was found
LE FLAPS TRANSIT LIGHT ILLUMINATED UPON SETTING FLAPS 15 ON APPC H. RAN CHECKLIST LAND FLAPS 15 LOCK FAUTL CODE 27-81201 WAS FOUND DURING BITE CHECK. ACCOMPLISHED FIM TASK 27-88. IN TRANSIENT LIGHT WOULD NOT EXTINGUISH IN FLT DECK PAST FLAP HANDLE COMMANDED AT 10. OVERHEAD INDICATION OF EXTEND POSITION LE SLAT 1 NOT SHOWING. SLAT IS PHYSICALLY VERIFIED TO BE IN COMMANDED POSITION. SLATS EXTENDED TO FULL, CLEANED SLATS 1 & 2 INBD PROX SENSOR. PERFORMED OPS TEST OF OF SLATS TO FULL EXTEND & RETRACT, OPS TEST FAILED. REPLACED LEADING EDGE SLAT 1 FLAP SENSORS S994 & S995 REF WDM 27-81-12-1 & MM 27-88-11-400-802, SLAT INDICATIONS RETURNED ON OVERHEAD SLAT INDICATOR, FLAPS AND SLATS OP NORMAL.