It would seem obvious that aircraft parts have a life limit whether it be a date (like a sell by date for food), a set number of flight hours or cycles (how many times an engine has been started and stopped or the landing gear retracted).
Turns out that various parts of planes also have a 'mid life', and although not a crisis as such, they are still required to be checked and have any necessary maintenance done. This is the case at present for the propellers on two of our aircraft.
There is something rather forlorn and abandoned looking about a plane without a prop, but it will only be for a short while. The props have been taken to Jo'burg to be checked and will be back in about a week and a half.