As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH, WHILE CONFIGURING FOR FLAPS 1, LEADING EDGE FLAP TRANSIT LIGHT STAYED ILLUMINATED. THE FLIGHT BROKE OFF APPROACH AND RECONFIGURED FOR A FLAPS 15 APPROACH BY THE CHECK LIST. THE FLIGHT DECLARED AN EMERGENCY AND LANDED WITHOUT FURTHER INCIDENT. PERFORMED FIM TASK 27-88-00-810-806, ALL CHECKS OK. NO FAULTS NOTED. THE AIRCRAFT WAS GROUNDED.