Most of the patrols were done in a 206, there was some 105 work also. It was MK 1 eyeball. Yes, they were mostly routine maintenance patrols. There were "relay" patrols which were flown because the line "relayed" due to some unknow cause, storm, tree branches, sknunks in the substations ect. I think what I forgot to state was we carried an observer whose responsibility it was to do the inspecting, the pilot was just suppose to fly the helicopter and keep the observer in a position to observe. Of course being like most pilots,...we would look at the line also. But, mainly we just flew and let the observer do the observing. Great work if you can get it.