As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLUID LOSS NR 1 SYSTEM. QTY DOWN TO 1.0 WITH HYD 1 FAIL / ALERT. RETURNED TO ATL. FOUND FLUID LEAKING NEAR O/B LEFT WING FLAP O/B ACT. NEW SECTION OF LINE ON O/B LEFT WING FLAP O/B ACT PER MM 20-0-07. LINE NEEDS LEAK CHECK. PERFORMED CAVITATION PER MM. OK FOR SERVICE.