As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RT HYDRAULIC SYSTEM QUANTITY AND PRESSURE WENT TO ZERO DURING DESCENT AND APPROACH. ACCOMPANIED BY A SPOILERS EICAS MESSAGE. NO ABNORMAL CONTROL INPUTS WERE FELT. ACCOMPLISHED PROCEDURES PER POM. FOUND HYD PRESSURE LINE TO NR 7 SPOILER PCA SEPARATED FROM PCA. LINE FAILED AT SWAGE. REPLACED SAME.