As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE CHECKING CALIBRATION BY FUELING AIRCRAFT TRANSMITTER QUIT AT 400 LBS OF FUEL. COMPLETELY DEAD. COULD NOT GET GAUGE TO MOVE EVEN WITH A JUMPER IN CALIBRATION PORTS. NOTE: CALIBRATION PROCEDURE WITH EMPTY TANK HAD WORKED GREAT. ALSOCALIBRATION CORRECT UP TO THE TIME IT QUIT AT 400 LBS.