What was found
WHILE TAXIING FOR DEPARTURE ALL HYDRAULIC PRESSURE WAS LOST ON RT HYDRAULIC SYSTEM. TROUBLESHOT AND FOUND RT HYDRAULIC PRESSURE SWITCH LEAKING. REPLACED THE FAILED SWITCH WITH NEW P/N 6629101004-001 S/N 1206. VISUAL INSPECTION OF THE OLD SWITCH SHOWS A PIECE OF SEALING/GASKET MATERIAL PROTRUDING FROM THE MANUFACTURER'S SPLIT FLANGES WHERE THE ELECTRICAL CONNECTOR END IS ASSEMBLED ONTO THE BODY OF THE SWITCH FASTENED WITH FOUR SCREWS. NOTE: TAG ON THE OLD SWITCH CONTAINS "SW PRESS FT 0912" AND "MFR98505-51158 S/N 2134" AND "24210SCD7629001004-001"