What was found
DURING CLIMB RECEIVED MASTER CAUTION AND LEADING EDGE AMBER LIGHT. THE AIRCRAFT RETURNED TO IAD. *S/D* THE FLAP SLAT ELECTRONIC UNIT INDICATED A NON-SUBSTANTIATED SLAT ASYMMETRY CONDITION. REPLACED FSEU, OPERATIONS CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING CLIMB RECEIVED MASTER CAUTION AND LEADING EDGE AMBER LIGHT. THE AIRCRAFT RETURNED TO IAD. *S/D* THE FLAP SLAT ELECTRONIC UNIT INDICATED A NON-SUBSTANTIATED SLAT ASYMMETRY CONDITION. REPLACED FSEU, OPERATIONS CHECK NORMAL.