What was found
DURING A MAINTENANCE VISIT FOUND CRACK, AFT PRESSURE BULKHEAD AT STA 1766 BETWEEN LONGERONS 10 LEFT AND LONGERON 11 LEFT, APPROX 2-1/2, BETWEEN BL 25.0 RIGHT AND BL 27.250 RIGHT. DAMAGE EXCEEDED LIMITS IAW DC-8 SRM. REMOVED DAMAGED, TREATED AREA IAW DC-8 SRM 51-1-8. FABRICATED AND INSTALLED DOUBLER, TRIPLER IAW DC8 SRM 53-2-5 AND 51-1-21.