more things be added
Not without oxygen!
The base altitudes in Namibia are significantly higher than in Europe. They are about 4500-5000m or more. This is a reason for the fast cutting speeds in Namibia, but at these altitudes oxygen has to be used! All airplanes flying in Namibia therefore have a functioning oxygen system, the cylinders can be refilled every day.
Enough fuel for a long flight home!
During normal, long flights you sometimes have to fly 200-300km and more away from your home airfield. It is therefore important to remember to have enough fuel for such long home flights and to refuel daily if necessary.