Flying a C-206 VFR into Salt Lake City one time, I did not find out my transponder was not working until the lady on approach let me know, and she did so loudly, often and with super exuberance. Right before she turned me loose with the tower she rather proudly informed me that I was not to leave until I got my transponder fixed and would not be accepted by departure if I tried to leave. This being a holiday weekend I was not going to stay the weekend waiting for a transponder.
Challenge accepted.
After landing and before the body arrived, I phoned the tower and explained that my transponder was not working and asked how can I get out.
No problem. We won't assign a code, obviously and then we will give you vectors out of the airspace and you will be on your way.
I got the shortest clearance I have ever received, "Cessna 123.....uh....departure frequency 123.45....uhhhh...... that's it, have a safe flight."
I departed, tower turned me left then sent me to departure. Departure said keep present heading and altitude, and let us know when you cross the second divided highway. I let them know and they turned me loose. I did request that they wish the friendly lady on approach a happy Memorial day from me. The controller laughed knowingly and said will do.