As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKE-OFF. RIGHT HYDRAULIC PRESSURE 0. QUANTITY WAS NORMAL. AN ALTERNATE GEAR EXTENSION WAS PERFORMED DUE TO THE RIGHT HYDRAULIC PRESSURE LOSS. EMERGENCY DECLARED AND RETURNED TO DEPARTURE. MAINTENANCE REPLACED RIGHT EDP, HYDRAULIC SYSTEM FILTERS AND FLUSHED SYSTEM TWICE DUE TO CONTAMINATION IAW MM. DURING OPS CHECK RT EDP ONLY PUTS OUT 2000 PSI. REPLACED RT HYD. PRESSURE TRANSMITTER IAW AMM. LEAK AND FUNCTION CHECKS OK.