Johannesburg - Low-cost airline Mango and trade union Solidarity will appear before the CCMA, the union said on Wednesday.
Spokesperson for Solidarity, Moira-Marie Kloppers, said the two sides were engaged in a wage dispute that they hoped the Commission for Conciliation, Mediation and Arbitration would resolve on Thursday.
The union accused the airline of underpaying its pilots.
"Pilots of Mango earn 30% less than their counterparts at Comair and 45% less than pilots at SA Airlines, even though Mango is a subsidiary," Kloppers said.
The two sides agreed last year to start a three-year process which would see Mango pilots' salaries levelled with that of other low-cost airline pilots.
The parties have failed to come to an agreement about what market-related salaries for pilots at low-cost airlines entail.
"If wage negotiations at the CCMA come to a deadlock, a strike certificate will be issued," said Kloppers.