Jam nuts serve a purpose and that is to prevent actuating arms from becoming disconnected. I found three examples on the same airplane. Two flap jam nuts were loose and should have been caught on a preflight, and the autopilot servo arm jam nut was loose as well. Any of these could cause a flight control problem if they came completely loose.
![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/04/Inspections-1-218x150.jpg "Last Bits")
![[Credit: Lisa Turner]](https://www.kitplanes.com/wp-content/uploads/2026/02/Fuel-Selector-218x150.jpg "Fuel Follies")
![[Credit: Eric Powell]](https://www.kitplanes.com/wp-content/uploads/2026/02/AdobeStock_1043661239-218x150.jpeg "Weight In The Balance")
Loctite and safety wire , I have yet to have one come loose
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