As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: CRACK ON PLATE LOCATED AT MIDDLE TRACK SLAT 7 ON LEFT HAND WING. REMOVED AND REPLACED PLATE LOCATED MIDDLE TRACK SLAT 7 ON LEFT HAND WING. PER B777-200 SRM 51-40-02-0G, DWG 114W2510 AND CMM 53-43-77 STEP 4.B.