As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT ENG PRSOV STUCK OPEN WITH ENGINE OFF. PERFORMED TROUBLESHOOTING TASK 36-00-00-860-807, SECTION C, DETERMINED PRSOV VALVE TO BE WORN EXCESSIVELY. REMOVED PRSOV VALVE ON NR 1 ENGINE REF AMM 36-22-04-000-801. INSTALLED PRSOV VALVE ON NR 1 ENGINE REF AMM 36-11-04-400-801. OPS CHECKED GOOD AND LEAK CHECKED GOOD IAW AMM 36-11-04-400-801.