As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI OUT FLAP/SLAT ELEC. MSG. APPEARED, AC RETURNED TO THE GATE AND MTX GROUNDED THE AC . MTX PERFORMED BITE TEST OF FSEU IAW FIM 27-51-50-00, NO DEFECTS WERE FOUND . RAN BOTH ENGINES AND OPERATED FLAPS AND SLATS HYDRAULICALLY AND ELECTRICALLY NO MEASAGES OR FAULTS FOUND IAW B767 AMM 71-00-00 . MTX RETURNED AC TO SERVICE AND AC DEPARTED .