Originally Posted by
mtbthis
Good call on the NASA. But unless someone said "Possible Pilot Deviation" or something specific along those lines, you are fine. The only way for action or an investigation to take place is if you are told that paper work has to be filed and that there is a record of your mistake.
That is no longer correct. If the automated system issued a report, the FAA can investigate it even if the controller didn't care or didn't even notice. Another common misconception is if ATC fails to correct your read back (IE, they clear you to 5,000 ft and you read back 3,000 ft and they don't say anything), you can also be violated for loss of separation.