What was found
(CAN) EXPERIENCED A BLUE HYD SYS LOW PRESS WARNING IN FLIGHT. THE FAULT WAS INVESTIGATED BY MX & THE LOW PRESS WARNING WAS CAUSED BY THE ASSOCIATED HYD PUMP CIRCUIT BREAKER BEING FOUND OPEN. FURTHER INVESTIGATION FOUND THE AC POWER SUPPLY WIRES 2924-6024, 2924-6025 & 2924-6026 FOR THE BLUE HYD SYS PUMP HAD CHAFED TOGETHER IN THEIR PROTECTIVE CONDUIT ALONG THE FORWARD WALL OF THE HYD BAY. THE WIRES HAD CHAFED TOGETHER, MELTED THE CONDUIT & SHORTED TO THE CONDUIT SUPPORT CLAMP OPENING THE CIRCUIT BREAKER.