As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LE FLAP TRANSIT LIGHT ILLUMINATED ON FINAL.(<P>TROUBLESHOT PER FIM 27-88 TASK 814 AND FOUND LH #3 FLAP PROX SENSOR FAILED. REMOVED AND REPLACED L/H #3 FLAP EXTEND PROX SENSOR IAW B 737 AMM 27-88-11. OPS CHECK GOOD AT THIS TIME. FOUND F3 PROX EXTEND CODE 27-81221 ON FSEU.</P>)