As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM, ON ARRIVAL PDX FOUND NR 1 ENG RT THRUST REVERSER BLOCKER DOOR 4TH FROM TOP BLOCKER DOOR SPRING BROKEN. REMOVED AND REPLACED DOOR IAW MM78-31-14-004-002-N00. INSTALLED NEW SPRING, REINSTALLED BLOCKER DOOR IAW MM 78-31-14-404-011-N00, OPERATED T/R SEVERAL TIMES OPS NML.