Airports Company South Africa (ACSA) says investigations into what caused a broken shaft which led to disruptions in the supply of jet fuel at O.R Tambo International Airport last week are still ongoing. This incident had prevented the pumping of jet fuel from storage tanks to the aprons, which enables the re-fuelling of aircrafts. This caused major disruptions to ACSA'S total network resulting in major delays and cancellation of flights. ACSA CEO, Mpumi Mpofu says ongoing investigations and analysis of the broken shaft may point to the following possibilities...