As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O ON SLAT RETRACTION HAD KRUEGER FAULT. RAN APPROPRIATE CHECKLISTS AND RTB. PERFORMED BITE DISPLAY OF BOTH SFCC'S AND FOUND ALL OF THE FAULT BALLS FOR THE NR 1 UNIT LIGHT. THAT FAULT CODE CORRESPONDS WITH BAD SFCC REF AMM 27-80-00. IND INSPECTED THE LT AND RT KRUGER FLAPS AND SWITCHES, ALSO OPERATED KRUGER FLAPS THRU SEVERAL CYCLES AND THE OPERATION WAS NORMAL. REPLACED THE NR 1 SFCC AND NR 2 SFCC PER M/M 27-51-18-04, OPS TEST WAS GOOD. ALSO PERFORMED AN LLM TEST PER M/M 22-40-00-05, TEST WAS GOOD.