As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEADING EDGE FLAPS AND SLATS DO NOT RETRACT WHILE RETRACT FLAPS ON TAKEOFF FLAPS PHYSICALLY STUCK AT FLAPS 1 FOUND FSEU FAULT HISTORY AS FOLLOWS R 28VAC EXC INV & L 28VAC EXC INV STORED SEVERAL TIMES. CYCLED CB THEN FLAP & SLAT SYS OPERATION CK OK. ADD FAULT: 27-53280,27-53279 PERFORMED WIRING CK PER WDM 27-51-11-1 NTF. PSEU FAULT SEVERAL TIMES. NEED TO BE REPLACED FSEU AS PRECATIONA LLY R/R FSEU PER AMM 27-51-01-000-801 & 400-801. PERFORMED BITE & INSTALLATION CK SEVERAL TIMES ALL NORMAL.A/OK FOR SERVICE