One of the stressful things that can happen to you as a pilot is when an air traffic controller tells you to call a facility on the telephone after you land. A tower controller issued me a phone number once, and I have to admit the request made my heart skip a beat. Fortunately, I hadn’t done anything wrong. The controller simply had some questions about the airplane I was flying.
Most of the time, if a controller gives you a phone number, it’s not good news. Generally it means you’ve made a serious error and there is a chance that you will suffer some punitive consequences as a result of that mistake. The magic words that should raise the hairs on the back of your neck are “possible pilot deviation.”
