As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 0698 - PRES/DE - AT FL340 HAD DUAL BLEED TRIP AND SUBSEQUENT PRESSURIZATION ISSUES. PERFORMED EMERGENCY DESCENT. CORRECTIVE ACTION: T/S PERFORMED NO GO ODI PREVENTION. R/R TEMP SENSOR, R/R LT PRSOV, REPLACED FAN AIR TEMP SNSR ON LT & RT SIDE, R/R 10TH SEAL AND COUPLING ON 10TH STAGE CK VLV. C/W PNEUMATIC SYSTEM ENG RUN DATA W/C, ALL CKS OK.