AboutMike Hicks Expertise Military/Civilian Helicopter operations, general questions about helicopters, flying helicopters and their operational use
Experience With over 18,000 flying hours 8,000 helicopter and 10,000 in airplanes. Retired military instructor pilot of both helicopter and fixed wing aircraft. Currently as an instructor pilot teaching at the home of Army Aviation, Ft. Rucker AL.
Organizations Professional Helicopter Pilots Assn.
Education/Credentials BS Professional Aeronautics from Embry Riddle University
Question Hello Mike, my question is, how many threads, if any should there be showing from a rod end bearing jam nut. This rod end bearing threads into the end of a flight control rod. There is a witness hole in the rod and a jam nut on the threaded rod end.
Second question where can I find this type of information?
I have looked in AC 43.13 and an Army TM 1-1500-204-23-1 and nothing specific about thread protrusion. So does it make a difference?
Answer Hey Keith,
It makes me wonder , if it does not state a required thread count in the -23 then I would assume it did not matter. BUT..if I remember correctly there is something nagging me about a visual check to insure there were threads showing. To be on the safe side I would call the manufacture or a local A&P or better yet an AI, just to be sure. Hope this helps.
