As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT HAND WING NUMBER 8 SLAT RIB FOUND CRACKED AT XOS 1010.49 DURING S/M WORK. LEFT HAND WING NUMBER 8 SLAT RIB AT STATION XOS 1010.49 CRACKED RIB REMOVED AND REPLACED WITH FABRICATED RIB AS PER SRM 51-35-01-OG. RIB FABRICATED AS PER DOUGLAS DRAWING ARB1924 REVISION B. AND EA# 1-5750-T0371245 PART 1. REPAIR CLASSIFIED AS MAJOR PER GMM 6-2-100.