Quote: “ICAO Annex 13 very thoroughly documents the protocol and etiquette associated with accident investigations.”
That applies in the first world. This happened in Africa. There are numerous crashes throughout the continent that have never been properly investigated and explained. Here are two examples:
http://www.pprune.org/african-aviati...-congo-11.html
http://www.pprune.org/african-aviati...er-2004-a.html