What was found
DURING FLIGHT, HYD LOW LEVEL ANNUNCIATOR ILLUMINATED FOLLOWED SHORTLY BY BOTH HYD PRESSURE LOW ANNUNCIATORS. LANDING GEAR EXTENDED USING EMERG SYS AND AN UNEVENTFUL LANDING MADE. HYD RESERVOIR AREA WAS SOAKED WITH FLUID. AFTER RESERVOIR WAS RE-SERVICED, ACFT WAS GROUND RUN AND A LEAK CHECK PERFORMED. A STEADY STREAM OF HYD FLUID WAS NOTED SPRAYING FROM PRESSURE SWITCH MOUNTED JUST AFT OF RESERVOIR. SWITCH LEAKING WHERE WIRING CONNECTOR ATTACHED TO SWITCH BODY. INSP FOUND CONNECTOR GASKET PUSHED OUT FROM UNDER CONNECTOR. SUBMITTER SURMISED PRESS SWITCH RUPTURED INTERNALLY ALLOWING SWITCH TO FILL WITH FLUID AND LEAK OUT UNDER CONNECTOR. (X)