What was found
5 MONTH OLD EMERGENCY EXTENSION VALVE FAILED OPERATIONAL CHECK, INSTALLED IN NEW CONDITION. RECEIVED AND INSTALLED NEW EMERGENCY EXTENSION VALVE, IN MANUFACTURERS PACKAGE WITH 8130. INSTALLED, INSPECTED RIGGING AND BLED GEAR SYSTEM. PERFORMED INITIAL GEAR SWINGS (2). ON THIRD SWING, PERFORMED EMERGENCY EXTENSION PER PIPER PROCEDURE. STOWED BREAKER, SYSTEM BUILT PRESSURE AS PER USUAL. PLACED GEAR IN UP POSITION, NORMAL GEAR TRANSIT. ON PUMP BUILDING PRESSURE, EXTENSION VALVE FAILED. ATTEMPTED RE-STOWING VALVE TO NO AFFECT. TIS 0.