As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LGA CREW REPORTED ZERO HYD FLUID INDICATED AT TOP OF DESCENT WITH SYS B PRESS NORMAL & NO OTHER INDICATIONS. ENG 2 PUMP LIGHT ILLUMINATED WITH FLAP EXTENSION. EMERGENCY DECLARED FLIGHT LANDED LGA WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED ENG DRIVEN HYD PUMP PRESS LINE ON NR 2 ENG. SYS GND CHECKED NORMAL OPERATION CLOSED.