Full down Autos, What next?
If you come across a Robinson with damage around the mast fairing, I would take a good look around the pushrods and jackshaft that operate the cyclic and collective. I have been lucky enough to get hold of one or two Robinsons (knackered ones), to cut up and evaluate. The main frame tube movement appears to be around the main rotor gearbox mountings , but is quite difficult to measure whilst the mast is in situ. A good clue is if there is any visual distortion of the horizontal firewall . I would not be too concerned about the main rotor geabox, the bearing setup in there is a real confidence booster. I would however question if its a wise thing to leave your pride and joy out in the rain too much, because unless the rubber gaiter on the swahplate is watertight it seems possible that water might get into the bearings.