As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB CABIN ALTITUDE WARNING LIGHT WITH CABIN AURAL SOUND CAME ON, ABNORMAL PROCEDURE WERE MADE AND CABIN ALTITUDE CONTINUED CLIMBING UNTIL 13000FT WITH MANUAL PRESURIZATION CONTROL. IAW 21-00-00/501 PERFORMED OPERATIONAL TEST AT AIR CONDITIONING SYSTEM AND IT WAS ADJUSTED. CLAMPS WITH EVIDENCE OF LEAKS. BOTH RT/LT PACKS AND WORKING PROPERLY.