As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT GOT ECAM -HYD RSVR LO LEVEL- ALERT. QTY NORMAL AFTER T/O, UNTIL START OF DESCENT THEN DROPPED TO RED DOT. AFTER LANDING, QTY BACK TO NORMAL GREEN BAND ON OVERHEAD AND ECAM. VERIFIED THAT GREEN SYSTEM RESERVOIR INDICATOR SHOWS 6 GALLONS OF FLUID. LANDING GEAR WAS FREEFALLED DURING FLIGHT CREW EMERGENCY PROCEDURES. FREE FALL EXT SYSTEM WAS RESET AND CORRECT MAINT PROCEDURE COMPLIED WITH PER ABOVE REF AMM A300-600-32-33-00-2.