As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED, DURING LANDING GEAR EXTENSION, NOSE GEAR DOWN AND LOCK LIGHT DID NOT ILLUMINATE. SHORTLY AFTERWARDS, BOTH HYD FLOW LIGHT ILLUMINATED. ELECTED TO GO-AROUND AND DECLARED AN EMERGENCY. CREW PERFORMED "GEAR WILL NOT EXTEND HYD CHECKLIST" AND PERFORMED EMERGENCY GEAR EXTENSION. LANDING WAS UNEVENTFUL. MX FOUND LT MLG HYD EXTEND LINE RUPTURED. REPLACED LINE, PERFORMED LANDING GEAR EXTENSION/RETRACTION FUNCTIONAL CHECKS. ACFT RELEASED BACK TO SERVICE.