Please help me to understand Canadian Transport Safety Board(TSB) and united States National Transportation Safety Board (NTSB). What are the trends they follow in Aviation safety? Are there any significant differences between their trends? What areas their trends gets varies? How is North America IATA Safety reports are di from rest of the world? Note: This is not a school assignment. I tried to google it everthing but I want some expert to help clear my doubts. Google information are not so reliable. I have just started my career in aviation so I don't know where else I can find this information. If you could also provide any source apart from this then it would be a lot helpful. Thank you so much for understanding.