As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3322 REQUESTED CLIMB TO FL330 FROM 270, CLIMBING OUT OF FL31.6 RECEIVED CAB PR SAFETY VALVE OPEN ECAM MSG. STOPPED OUR CLIMB AND DECENDED TO FL310 DELTA P WAS 8.7 AT FL31 REMAINED AT 8.4. CORRECTIVE ACTION: T/S. CLASS 2 AND 3 BOTH PRESENT. NO FURTHER MAINT REQ. TEST OK. (4659584)