If my ex is on probation in calif and left the state for three days to go to chicago without contacting his p.o. First did he violate his probation because he is telling me he can leave for 72 hours without contacting his p.o.

First, its not a good idea to piggyback your question on another thread. Especially one several years old that has nothing to do with your question. I'm moved your question to its own thread in the appropriate forum. Please use the Ask button in the future to ask a new question.

Each person's probation may be different. Its possible that he has a 72 hour window. Without knowing the terms of his probation we can't answer. If he's your ex, why does this matter to you?