As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) CREW ADVISED FLIGHT DISPATCH VIA THE VHF THAT THEY HAD DECLARED A PAN-PAN WITH ATC DUE TO A "GREEN HYDRAULIC LOW RESERVOIR" 20 MINUTES FROM LANDING. CREW REPORTED AN UNEVENTFUL LANDING. THE ACFT REQUIRED A TOW TO THE GATE. LOW LEVEL SWITCH OF GREEN HYD RESERVOIR REPLACED IAW AMM 29-11-41-000-003 AND 29-11-41-400-003. LANDING GEAR RESTORED TO NORMAL MODE AFTER FREE FALL IAW AMM 32-00-00-860-003.