As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BWI- FLIGHT 3923. CREW REPORTED THAT NR 1 HYDRAULIC QUANTITY WAS READING ZERO AFTER TAKEOFF. AN EMERGENCY WAS DECLARED, AND PLANE LANDED SAFELY IN BWI WITH A LOSS OF BRAKES AND FLAPS. MAINTENANCE FOUND A CRACK IN A FLARE OF HYDRAULIC PRESSURE LINE AT NR 1 HYDRAULIC MANIFOLD. INTERIM FLEX LINE INSTALLED. ENGINE DRIVEN HYDRAULIC PUMP, AND CASE DRAIN FILTER AND HOUSING WERE REPLACED. HYDRAULIC SYSTEM BLED, AND LEAK CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.