What was found
SHV - FLT 2395, DURING CLIMB AND UPON MOVING THE LANDING GEAR SELECTOR TO RETRACT THE CREW OBSERVED A HYDRAULIC SYSTEM 1 ADVISORY. THE CREW MOVED THE LANDING GEAR SELECTOR BACK TO EXTEND AND PERFORMED THE ABNORMAL INDICATION PROCEDURES. THE AIRCRAFT MADE AN UNEVENTFUL LANDING BACK TO JAN. UPON INSPECTION MAINTENANCE FOUND A RUPTURED HYDRAULIC PRESSURE LINE. MAINTENANCE REMOVED AND REPLACED THE PRESSURE LINE; AS A PRECAUTIONARY REMOVED AND REPLACED THE NR 1 ENGINE HYDRAULIC PUMP IAW EMB 145 AMM 29-10-03. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.