What was found
AT APPROXIMATELY FLT LEVEL 230 CABIN PRESS WENT TO 10,000 FT, LEVEL OFF A FLT 220 TO MAINTAIN CABIN PRESSURIZATION. AIRCRAFT FERRIED TO EDDF FOR REPAIR. AFT PRESURE BULKHEAD REPAIRED PER BOEING ROD SKETCH 99-06-22-001, REF : EWA M/A NR AM-5312-01:00 AND WORK CARD NR 1.