As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA - FLT 708 - EN ROUTE DFW-LGA, SHORTLY BEFORE ARRIVAL LEFT SIDE HYDRAULIC QUANTITY DECREASED TO ZERO. HYDRAULIC PRESSURE DECREASED. LANDED LGA WITHOUT FURTHER INCIDENT. REPLACED LEFT SIDE HYDRAULIC PUMP. ACCOMPLISHED LEAK CHECK PER THE MM. NO LEAKS NOTED. SYSTEM GROUND CHECKED NORMAL OPERATION. (M)