I have recently been using a mobile app to track flights, which is really cool. I live in the rural heartland of America, so it's an event for me to see an A380 actually flying.
Every once and a while a squawk 7700 alert will come up, which I understand is the emergency transponder code. There are more, such as 7600 and 7500, which I find are less common.
My question is, is there a way to do some post-mortem followup as to why the aircraft squawked the code? Is this public information that can be found by some agency such as the NTSB?