What was found
AIRCRAFT LOST HYDRAULIC PRESSURE AFTER CREW SELECTED THE GEAR DOWN. THE GEAR HAD 3 GREEN DOWN AND LOCKED INDICATIONS AND 2 RED UNSAFE INDICATIONS. THE AIRCRAFT MADE AN UNEVENTFUL LANDING. MAINTENANCE FOUND HYDRAULIC LINE CRACKED UNDERNEATH ATTACHING ADEL CLAMP. HYDRAULIC LINE WAS REPLACED, HYDRAULICS WERE SERVICED, LANDING GEAR WAS CYCLED, AND EMERGENCY AIR WAS SERVICED USING PROCEDURES IN THE MFG MM.