As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: REJECTED TAKEOFF AT LOW SPEED 50 KTS BECAUSE OF TAKEOFF CONFIGURATION WARNING WITH LEADING EDGE FLAPS AND SLATS IN CORRECT CONFIGURATION. MINIMUM BRAKING USED. REPLACED SENSOR S168 (AALA202104149003) IAW AMM 27-87-00. REPLACED FLAP SLATS ELECTRONIC UNIT (AALA202104149022).