As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ORD - FLT NR 0393 - DURING DESCENT INTO ORD, LOST ALL HYDRAULIC FLUID IN SYSTEM 1. ACCOMPLISHED ALTERNATE LANDING GEAR AND FLAP EXTENSIONS AND AIRCRAFT LANDED ORD WITHOUT INCIDENT. REPLACED BROKEN 'T' FITTING UNDER CABIN FLOOR FOR HYDRAULIC SYSTEM 1. SERVICED HYDRAULIC SYSTEM AND ACCOMPLISHED LEAK CHECK WITH NO DEFECTS FOUND. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)