As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - MAJOR REPAIR - DURING C-10 CHECK A 3/4" CRACK WAS FOUND ON THE UPPER RADIUS OF THE OUTBOARD R/H SEAT TRACK IN THE AFT CARGO COMPARTMENT. MAINTENANCE REMOVED THE SEAT TRACK FROM BS 1180 TO BS 1280, RBL 45.5; FABRICATED A NEW REPLACEMENT SEAT TRACK ; INSTALLED REPAIR PART IAW B757-200 SRM 53-60-52, PG. 1-2.