As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
POWDERY CORROSION ON LT ELEV OTBD SKIN SPLICE PLATE. LR-13 VERIFIED STEPS 7 & 8. OK TO INSTALL NEW CONDUCTIVE FRAME GIVEN. INSTALLED NEW FRAME CONDUCTIVE ON L/H ELEVATOR O/B SKIN LOWER SIDE IAW B757-200 DWG 183N2007 AND B757-200 SRM 51-40-02-0G-0. OK TO APPLIED PRIMER ON REWORKED AREA.