As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ACFT DECLARED AN EMERGENCY DUE TO THE LOSS OF THE GREEN HYD SYS. ACFT DID REQUIRE A TOW OFF THE RUNWAY AS THEY WERE UNABLE TO STEER ACFT. RESOLUTION FOUND GREEN HYD SYS RUDDER SERVO CONTROL LEAKING. REPLACED GREEN SYSTEM RUDDER SERVO CONTROL IAW AMM 27-24-51PB401. SYSTEM CHECKED OK.