As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A/C EVAL FLIGHT ,AT CLIMBOUT LE SLAT ASYM ON EICAS AND LEADING EDGE DESCREET LIGHT , RAN CHECKLIST AND DECLARED AN EMERGENCY PERFORMED (ATB) AND RETURNED TO FIELD.MTX GROUNDED AC AND TROUBLE SHOT AND . ADJUSTED GAP ON LEADING EDGE SLAT TARGET PROX SENSOR ON #8 SLAT. ADJUSTED IAW B767 AMM 27-81-04. OPS CHECK GOOD. MTX RETURNED AC TO SERVICE.