What was found
DURING A MAINTENANCE VISIT, FOUND P/N: 3755894-2 FITTING, FUSELAGE, MADE FROM P/N: 3755894-4 7075-T6 FORGING (MATERIAL SUBSTITUTION). DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. SHOT PEEN FABRICATED AND INSTALLED IAW DPS 4.999 OR DC8 SRM 51-1-4A, FINISH PART PER DAC DWG 3755844, ALL IAW FAA APPROVED TIMCO DER ENGINEERING SKETCH NR REO-06175.