What was found
(CAN)AFTER TAKEOFF PILOT NOTICED LOSS OF HYDRAULIC PRESSURE AND HYDRAULIC FLUID COMING FROM HYDRAULIC BAY IN STARBOARD NACELLE. ALL PERTINANT EMERGENCY PROCEDURES WERE FOLLOWED BY CREW. MAINTENANCE DISCOVE RED A BLANKING PLUG IN THE END OF THE HYDRAULIC MANIFOLD HAD A HAIR LINE CRACK THAT CAUSED THE LOSS OF HYDRAULIC PRESSURE. PLUG AND ONE HYDRAULIC PUMP REPLACED.