What was found
AT APPROXIMATELY 26,000 FT, 7 PSID, AND 4,500 FT CABIN, THE CABIN RATE OF CLIMB INDICATOR WENT FROM 500 TO 2500 FPM ASCENT. REGAINED CONTROL OF CABIN AT APPROXIMATELY 18,000 FT AND 3 PSID. AIRCRAFT CONTINUED TO ATL. RE-INSTALLED SEAL IN RETAINER ON MAIN CARGO DOOR IAW DC 8 MM. ALSO, MADE SMALL REPAIR IN TORN SEAL IAW DC 8 TEMP REV SRM CHAPTER 52-2-1.