What was found
AFT CARGO BAY, AFT LAV EXHAUST VENT BETWEEN FR 69 & FR 70, STR 30R - 33R HAD CORROSION ON LOWER, INBD SIDE AT CONTACT POINT OF VENT OUTLET & AIRFRAME. R & R THE PLATE, FR 69-70 S30-33R IAW SRM 53-41-00-210 -030-C1, SRM 53-41-11-283-065, & SRM 51-72-11-911-001.