Four out of six of those mentioned are pretty well known, at least on the bush telegraph.
The ADC crash: The F/O rolled the A/C into an unrecoverable position while making a traffic avoidance manoeuvre.
The Aero Twotter crash: It was taken to be the case that the wrong waypoint (Abuja VOR rather than RWY 22 threshold) was used, resulting in a 1.8-mile error. If you look at the VOR22 plate, that extra 1.8 miles away from the threshold puts you just in front of the last hill, which is where they hit. The ILS G/S and DME were U/S at the time and the weather was heavy thunderstorms.