As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND LEAK AT NR 4 SPOILER ACTUATOR. LEAK IS ONE DROP PER MINUTE OR LESS DURING ACTUATION. REQUIRES ACTUATOR. PART PLACED IN LOB. HYD SYS SERVICED. LEAK IS FROM STATIC SEAL AT BOTTOM OF ACTUATOR AND IS WITHIN CF LIMITS. REMOVED NR 4 SPOILER PCU. INSTALLED NR 4 SPOILER PCU, COMPLETED UP TO STEP 3 F,(1),(I). PG 408. FINISHED INSTALLATION, TESTS AND ADJUSTMENT CARRIED OUT PER AMM. OP CHECKS NORMAL.