As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) PART WAS INSTALLED NEW DURING INSPECTION. AFTER NOTING THAT THE ORIGINAL EJECTOR RELIEF VALVE WAS SHOWING SIGNS OF WEAR. THIS PART OPERATED FOR 4.7 HRS AND FAILED AGAIN. WE HAVE BEEN NOTICING THIS IN MULTIPLE DIFFERENT ACFT IN THE FLEET. SYS OUTPUT PRESSURES AND OPERATIONS HAVE BEEN VERIFIED TO BE IN LIMITS IAW MM.