What was found
DURING ROUTINE C-CHECK INSPECTION, FOUND IMPROPER REPAIR AT RIGHT AFT FUSELAGE SKIN AT LONGERON 28 REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED EXISTING REPAIR. REMOVED DAMAGED AREA. PERFORMED NDT INSPECTION. NO CRACK OR NO CORROSION FOUND. FABRICATED INTERNAL AND EXTERNAL DOUBLER, FINGER DOUBLERS. CLEANED, TREATED, PRIMED AREA AND REPAIR PARTS. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW FAA FORM 8100-9 DATED 02/16/09, AD 2008-06-23, S/B DC8 S3A080, DRAWING SR08530032, DRAWING ED-4905 DATED 01/27/09, MESSAGE SEV-TIN-09-0002-08B DATED 02/10/09, SRM 51-1-21, SRM 51-1-20D, 51-3-0, NDT PART 06-10-01-001, SRM 51-1-8B, SRM 51-1-11, AND SRM 51-3-1.