Flight Crew Air Transport Pilot (ATP); Flight Crew Multiengine; Flight Crew Instrument
Aircraft Equipment Problem Less Severe
Flight Crew FLC complied w / Automation / Advisory
Aircraft
At the top of the descent the ECAM Fuel Display for the right inner tank went to 'XX.X'. Fuel in this tank was approximately zero at this point. This lack of signal caused the fuel totalizer; CG; Gross Weight of the airplane to also go to XX.X. Per the QRH; there are two CB's (P60/P61) that we are advised to reset to restore the fuel quantity indication. That action only corrected the problem intermittently. We landed in ZZZ and Maintenance troubleshot and signed off on the fuel system as airworthy. The same problem recurred on the flight from ZZZ to ZZZ1. Again; we followed the QRH CB procedure; but still; it did not fix the problem. We landed and wrote up the AML. I received a maintenance report on [date] in ZZZ1 stating that they found burn residue at the terminal end of the probes inside that fuel tank. I would like to ensure that the right folks are aware of this incident to determine if we have a systemic issue here with the hardware (arcing in an empty fuel tank) or the QRH procedure when we are resetting power to the cadensicon probes. The gravity of the threat of a fuel tank explosion should be apparent to us all. Recommend that this issue be investigated to ensure that we do not have a systemic risk of fuel tank explosions with our hardware or the QRH procedure that requires you to reset the CB to this system.
A300 Captain reported receiving a maintenance report stating burn residue found at the terminal end of the probes inside the fuel tank. This was after the Captain had performed the QRH procedure for a fuel gauge inoperative/reset.