Johannesburg Light Plane Club, at Baragwanath is most definitely defunct I'm afraid,
I went to the site a couple of years ago while on holiday, its a horrible Industrial area, the only thing left in amongst the garbage is the beautiful old WW II hangar that we (Helicopter Services Pty) rented.
The ONLY sign that JLPC ever existed was a large chunk of concrete with blue tiles on it, part of the swimming pool, behind the hangar.
Is Colin Sole reading this forum, we were together in Warri and friends in Joburg. he purchased my motor cycle when I left.