As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAJOR, WHILE AIRCRAFT WAS IN FOR HEAVY CHECK. MAINTENANCE REPORTED LEVEL 2 CORROSION IN MULTIPLE AREAS OF CROSS BEAM AT FR-84. MAINTENANCE PERFORMED A "MAJOR" REPAIR ON CROSS BEAM AT FR-84. FABRICATED REPAIR ANGLE AND REMOVED & REPLACED A SUPPORT PANEL P/N 170-92908-001 IAW ETD2017-170-030300 AND SRM 51-41-01 & 51-43-03. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.