As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ON DEICING PAD CREW REPORTED THAT A HYDRAULIC LINE WAS LEAKING IN THE CABIN AT SEATS 5DF AND 6DF. EMERGENCY WAS DECLARED. FLIGHT ATTENDANT AND ONE PASSENGER WERE TAKEN TO HOSPITAL DUE TO AFFECT OF HYDRAULIC FLUID IN THE CABIN. MAINTENANCE REPLACED A HYDRAULIC LINE FOR THE NOSE LANDING GEAR SYSTEM. ALSO REPLACED WERE AFFECTED INNER CABIN WINDOWS, CARPETING, AND PASSENGER SERVICE UNITS. AIRCRAFT RETURNED TO SERVICE.