As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SHIP 3864 -HYD/DE- DECLARED EMERGENCY ON APPROACH IND DUE TO LOSS OF B SYSTEM HYDRAULIC QUANTITY. CORRECTIVE ACTION: FOUND RUDDER 'B' SYSTEM HYDRAULIC PRESSURE LINE IN 48 SECTION CRACKED. REMOVED SAME AND INSTALLED TEMPORARY LINE PER B737 AMM. NO LEAKS NOTED. OK FOR SERVICE.