As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT AFTER GEAR RETRACTION, HYD SYS 1 QTY LOWERED TO THE BOTTOM OF THE GREEN RANGE, BUT WAS STILL IN THE GREEN RANGE. RECEIVED AN EICAS HYD 1 QTY LOW MESSAGE. THE QTY WAS AT THE TOP OF THE YELLOW RANGE AND STABLE. DECLARED AN EMEGENCY. LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. PERFORMED VISUAL INSPECTION OF NR 1 AND NR 2 HYD SYS FOUND NO LEAKS PROCEEDED TO PERFORM HYD SERVICE OF NR 1 SYS IAW AMM 12-13-01. ACFT RETURNED TO SERVICE.