Hi, on one occasion the Right trim pump was selected off on the OHP but indicated amber inline I.e stuck running, I suppose there is still a small quantity of fuel around the pump but I was wondering if there is any protection other than the OHP switch and CB's(last resort) in the avionics bay to prevent dry running and overheating with fuel vapours around if the tank was completely empty. Is the manual disconnection with CB's not required if OHP switch fails to turn off the pump,can the pump run for a number of hours with a dry tank without any danger of overheat? thanks, Pudd