JOHANNESBURG - The SA Cabin Crew Association (SACCA) wants the Takatso-SAA deal scrapped.
It says the takeover has been heading for a crash since it took off.
Public Enterprises Minister Pravin Gordhan on Tuesday said he can't divulge details of the agreement.
He claims this is due to it being commercially sensitive.
"You might recall that Numsa and SACCA at the beginning of this deal had raised the fact that there is something wrong with this deal," said SACCA president Zazi Nsibanyoni-Mugambi.
"If the deal is straightforward with Takatso it should be transparent. We should be given the information that is required because the bid should be open to the public because we are an SEO, after all."