And here is one that kept happening to my trainer while I was teaching my oldest student.
All would go well until the third flight, sometimes the fourth but mostly the third for some reason?? The servo on my elevator would go nuts and the plane would start doing A loop on it's own? At first I didn't notice it was just Ch.2. I was on A dry lake bed and knew there was no one in the flight area on my Ch. I even drove around the lake bed looking for someone maybe flying A foamie or heli and not knowing there is A flying site out there.
Then it hit me it was only Ch. 2 so I checked the servo, had A bad wire so I fixed it. Next time out it did the same thing so I replaced the servo, again the same thing? Then I replaced the RX and got the same thing??
I pulled out A servo from my other plane and installed it, problem cured???
What are the odds of getting two bad servos??
And A big YES, if A club knows there is ARF problem of any kind then they should i9nform everyone. At one of my clubs we used A Frequency checker when no one was out there, we had two channels that kept showing up as being used. Problem was it didn't happen all the time. Never did figure that one out. I'm still not A real big fan of 2.4 but RF problems are A big plus in it's favor.