What was found
CORROSION AROUND FASTENER AT B.S. 887+13; B.L. 0; W.L. 306.5 ON FUSELAGE SKIN UNDER DORSAL FIN. REMOVED ONE FASTENER IAW SRM 51-40-02. REMOVED CORROSION. PERFORMED VISUAL INSPECTION WITH A 10- POWER MAGNIFYING GLASS IAW SRM 51-10-02 PARAGRAPH 15.A.6.A. NO ADDITIONAL DAMAGE NOTED. HFEC INSPECTED SKIN BLENDOUT AREA IAW NDTM P6; 51-00-00, PROC 23. NO DISCREPANCIES NOTED. INSPECTED OPEN HOLE IAW NDTM P6; 51-00-00, PROC 16. NO CRACKS NOTED. UT INSPECTED SKIN BLENDOUT AREA IAW NDTM P4; 51-00-00 PROC 2. REMAINING MAT. 0.068 TOOL ID ATS2341; E650. FOUND OUT OF LIMITS. INSTALLED ONE FASTENER ACCOMPLISHED IAW EA 21-153-02635-WIP1.