Comair (South Africa) (Johannesburg O.R. Tambo) had eleven of its B737s grounded by the South African Civil Aviation Authority (SACAA) on Friday, August 2, after they were found to be flying with components (said to be the spindles) whose life-cycle expired in August 2012. According to Afrikaans paper, Rapport, the eleven aircraft included five B737-300s and B737-400s, four of which were grounded by SACAA in Cape Town International and Durban King Shaka. The affected aircraft were then ferried to Johannesburg O.R. Tambo for the requisite parts replacement at SAA Technical. Martin Louw, Comair's operations director, said SAA Technical, Comair's MRO provider, had checked the number of cycles but had not tracked the date in relation to the expiry of the parts leading to the debacle. With all necessary parts replaced and checks completed, the aircraft were expected to have returned to service by Monday, August 5.