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Trade union Solidarity says South African Airways uses an unfair admittance policy for its cadet pilot development programme, which does not admit white men.
The remark follows an unsuccessful application by a white man.
Solidarity spokesperson, Johan Kruger says they have written a letter to SAA , asking to provide them with reasons for the man's unsuccessful application by Friday.
He says the man's application was unsuccessful, despite performing exceptionally well in the aviation knowledge and the psychometric tests that were part of the selection process.
Kruger says during a meeting between Solidarity and the SAA in 2013, the airline confirmed that no white men, regardless of how they had performed in the selection process, had been admitted to the cadet programme.
SAA spokesperson, Tlali Tlali said the programme was not an employment recruitment drive, but a bursary programme.
He said SAA needed to redress the legacies of the past and to explore increasing the pool of pilots from historically discriminated groups and deserving cases.