As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - EMERGENCY LANDING - FLT 0085 - INBOUND TO PHX EN ROUTE FROM LAS THE L/H HYDRAULIC SYSTEM FLUID LEVEL WENT TO "0". DECLARED EMERGENCY AND LANDED SAFELY; AIRCRAFT TAXIED TO GATE UNDER ITS OWN POWER. MAINTENANCE TROUBLESHOT FLUID LOSS AND FOUND THE L/H ENGINE HYDRAULIC PUMP PRESSURE SWITCH LINE CRACKED. REMOVED AND REPLACED CRACKED HYDRAULIC LINE, AND REPLACED THE CASE DRAIN FILTER. SERVICED HYDRAULIC SYSTEM AND RAN ENGINE, LEAK CHECK WAS GOOD IAW T/C R5M29601.