What was found
CORROSION ALONG RT WING UPPER SPAR CAP SURFACES. IDENTIFIED ALL CORRODED AREAS ON THE RT UPPER WING SPAR CAP & REMOVED ALL CORROSION. PERFORMED A FLUORESCENT DYE PENETRANT INSPECTION OF THE BLENDED AREAS ON RT WING UPPER SPAR CAP, FOR REMAINING CORROSION & CRACKS IAW NTM PART 7 20-00-00. NO REMAINING CORROSION OR CRACKS NOTED AT THIS TIME. PERFORMED AN ULTRASONIC THICKNESS INSPECTION IAW NTM 4 20-00-01. MAPPED REMAINING THICKNESS ON SPAR CAP. R & R ALL FASTENERS THAT WERE AFFECTED DURING BLENDING FOR CORROSION REMOVAL. ALL WORK PERFORMED & COMPLETED IAW FIELD REPAIR S-560-0792/03RD REV DATED 5 4 16. APPROVED BY 8100-9 DATED 5 6 16. THIS REPAIR TO BE CONSIDERED MAJOR.