ZEEBEE
Hope u dont get me wrong here....dont think drawing a long bow on this one here and making assumptions...merely after 7000hrs of low level survey behind me and another who knows how many ahead stating that this appears the most likely scenario and one of the most PREVENTABLE.
An organization exists namely IAGSA that was founded 10 or so yrs ago with the aim of eliminating this kind of thing. As far as their recomendations go with regards to Terrain / Temperature / Altitude / Low level risk etc I am pretty confident that they would certainly not agree with a single piston a/c but rather a multi turbine to carry out this type of work in Namibia that is notorious for killing experienced survey crews.
I have my own views on this one but feel that this aint the place to thrash it. I hope IAGSA are watching.........
I hope that we will be able to learn from this unfortunate and definately preventable accident.