As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEADING EDGE ASYM MESSAGE DISPLAYED DURING DESCENT WITHOUT CREW INITIATING ANY FLAP SETTING. EMERGENCY DECLARED, CONTINUED APPROACH AND ACCOMPLISHED LE FLAP ASYM QRH CHECKLIST. LANDED WITHOUT INCIDENT . AIRCRAFT GROUNDED. COMPLIED WITH FAULT ISOLATION MANUAL 27-81-FAULT TREE 809. REMOVED AND REPLACED THE 297 PROXIMITY SENSOR ON RIGHT SLAT NR 9 OTBD IAW AMM 27-88-01. OPS CHECKED GOOD. FAULT NOT DUPLICATED. NO FURTHER DEFECTS WERE NOTED. AIRCRAFT RELEASED TO SERVICE.