As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAJOR REPAIR: CRACK ON FRONT SPAR OF LH WINGLET. REMOVED AND REPLACED FWD SPAR ON L/H WINGLET PER REFERENCE, 3.2.13 ETD 2018-170-112888 REV B. SEE WIPS, TASKS AND ATTACHED IPM-12, WO# C117401 FOR ALL WORK PERFORMED. SEE EAMS W/O H6837 SN 014 FOR WORK DETAILS. AIRCRAFT REMAINS IN HEAVY CHECK BNA.