As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON PATS RT AUXILARY TANK FOUND THE PRESSURE DIFFERENTIAL SWITCH, THE SOCKET OF THE SWITCH AND THE ELECTRICAL HARNESS CONNECTOR HAVING BOTH PINS, THE CONNECTOR SHOULD BE A FEMALE TYPE. THE DIFFERENTIAL SWITCH IS WORKING ONLY ON GROUND DURING FUELING. FOUND ALSO THAT THE SYSTEM IS WORKING BECAUSE THAT THE PINS ARE CONTACTING EACH OTHER. PATS THE STC HOLDER ADVISED AND A SB IS ALREADY OUT (TC NR 20070618004)