What was found
AREAS OF CORROSION NOTED ON LOWER SKIN AROUND OUTFLOW VALVE (AFT ACCESSORY COMPARTMENT) FROM FLOOR FRAME 1620 - 1640, LONGERON 34 RIGHT TO 34 LEFT. REMOVED ALL SUBSTRUCTURE AND FASTENERS COMMON TO REPAIR AREA TO FACILITATE REPAIR. REMOVED ALL CORROSION IAW DC-8 SRM 53-2-0. COMPLIED WITH REA D853-50305-MR AND D853-50305-MR REV A. ALODINED AND PRIMED ALL PARTS IAW DC-8 SRM 51-1-8. REINSTALLED ALL SUBSTRUCTURE AND FASTENERS COMMON TO REPAIR AREA IAW DC-8 SRM 51-1-20D.