As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT AT FL290 EICAS MESSAGE SLAT FAIL ALERTED. ALONG WITH AMBER SLAT AND ZERO BOX. BOTH WERE AMBER "TRANSFERRED TO NRWC 766-ORD-01305" CMC SHOWS F/C 27831005ACE TROUBLESHOT PER EMB 170 FIM 27-83-00-810-814 REVEALED WIRES SHORTED BETWEEN CANNON PLUGS P0992 AND P0892. REPLACED SLAT WIRING HARNESS IAW AMM 27-83-07-000-801-A AND 27-83-07-400-801-A OPS CHECK GOOD IAW EMB 170 AMM 27-80-00 NO FURTHER DEFECTS NOTED