I’m heading up North next week to do some stuff. I was having a quick look at the flight I’ll be taking, and I’m not sure what happened to it a couple of weeks ago:

That’s a lot of “Diverted to CPT”. And CPT is where it set off from. Bit weird.
All those flights seem to get close though, although they also all seem not to have landed, only dropping to around 4,000m before turning and heading back.

My best guess is that there’s some sort of “not switching the ADS off or on”, and the diversion to CPT is merely the return flight; the anomaly just being the landing (or lack of it) up at the other end. It’s also worth noting that almost all the flights that were “Diverted to CPT” were on ZS-CMD, and all of them were on Mitsubishi CR9s. The problem seems to go away when they ran a Beech 1900D on the route.
A turbo-prop. That would be my first one in SA, and my first one since that horrific landing at LCY last July. Limpopo next week then. Or CPT, depending on what plane I get.