Patent ID: 7988086

Claim:
A fuel tank for an aircraft, wherein the fuel tank includes in-tank wiring connected to a first discharge path and a second discharge path, said first and second discharge paths being for the safe discharge from within the fuel tank of static electricity or electricity induced by environmental conditions to an aircraft electrical ground, and a monitoring circuit for monitoring the integrity of the first and second discharge paths, the monitoring circuit being housed in a conductive enclosure, said conductive enclosure being provided with a conductor for electrical connection to an aircraft electrical ground, the first discharge path extending from a fuel tank circuit ground through a first resistor and being bonded to a first contact point on the conductive enclosure, the second discharge path extending from said fuel tank circuit ground through a second resistor and being bonded to a second contact point on the conductive enclosure, and the first discharge path, the second discharge path and the conductive enclosure form a loop which permits the integrity of the first and second discharge paths to be monitored by the monitoring circuit.