Numsa issued the 48-hour notice on Monday, and aims to shut down operations and march to the offices of the national Department of Transport to hand over a memorandum of demands on Thursday.
"Mr Letsoalo behaves as if he is untouchable, which is why the RAF is in shambles. There is a complete failure to regulate his behaviour, and it seems even the board of the RAF is helpless in the face of his gross incompetence. Numsa is demanding that Collins Letsoalo must be fired for the disastrous state of the RAF," Numsa general secretary Irvin Jim said in a statement this week.