As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED DURING DESCENT, RECEIVED AN EICAS HYD 1 QTY MESSAGE. COMPLIED WITH AOM COL 1 PROCEDURES AND DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. TRANSFERED FLUID FROM SYS NR 2 TO SYSTEM NR 1 IAW ETN-EM-29-023. R & R THE NR 1 HYD PRESSURE FILTER, LEAK AND OPS GOOD IAW AMM 29-10-08.