I was really hoping for this thread to stay alive, I have a p70 that has a bunch of dust and dirt inside from a gear up landing 'turbine was shut down but still spinning' i was about to send it to jetcat to be taken apart and inspected, I have pulled the front case, the electronic board and the rear and outer cover and cleaned what I could, will I damage the turbine if there is sand in the combustion chamber? also are the bearings sealed or do they need to be cleaned and oiled? if a few more pictures show up I will take it apart myself, great thread guys add a few more pics