As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) FLIGHT CREW REPORTED THAT ON DECENT THROUGH 12000` THE #1 HYDRAULIC QUANTITY DROPPED TO ZERO AND THE #1 HYDRAULIC ISO LIGHT ILLUMINATED. CREW DECLARED AN EMERGENCY AND CARRIED OUT A FLAPLESS LANDING. MAINTENANCE TROUBLESHOOTING IDENTIFIED A LEAK IN THE HYDRAULIC CASE DRAIN LINE LOCATED IN THE LEFT HAND NACELLE. THE LINE WAS REPAIRED WITH A PERMASWAGE IN ACCORDANCE WITH AMM 20-20-21. AIRCRAFT RETURNED TO SERVICE. (TC# 20190731014)