OR Tambo Jet Fuel Supply Under Pressure as Natref Outage Forces Airlines to Prepare

South Africa’s aviation sector is keeping a close eye on jet-fuel supplies at O.R. Tambo International Airport after an unplanned shutdown at Sasol’s Natref refinery disrupted some deliveries.

Sasol confirmed on August 26 that a downstream unit at Natref had shut down unexpectedly, affecting its ability to meet some fuel-supply commitments. That includes jet fuel for customers at O.R. Tambo. The company said it would continue supplying some jet fuel while working to restore normal operations and put measures in place to limit the impact.

The situation is serious, but it is important not to overstate it. There is no evidence of an airport-wide fuel shortage or widespread flight cancellations at O.R. Tambo. The problem is that one important supplier is unable to provide its full expected volumes, forcing airlines to make other arrangements.

Airlines are preparing for the disruption

FlySafair has already increased supplies from alternative fuel providers to protect its operations.

The airline has also been looking at fuel tankering, where an aircraft takes on extra fuel at another airport so it needs less fuel when it reaches Johannesburg. The approach can help airlines keep flying when fuel availability at a particular airport is tight, although carrying extra fuel also increases the aircraft’s weight and operating costs.

For airlines, the immediate priority is simple: keep aircraft operating while making sure they have enough fuel to complete their schedules.

That is why the disruption has attracted attention even though passengers are not currently facing widespread cancellations.

What caused the problem?

Natref, located in Sasolburg, experienced the unplanned shutdown in the middle of August. Sasol said the incident coincided with planned work on another unit, affecting refinery production and supply.

In its latest operational update, Sasol said it had implemented measures intended to keep the affected unit operating through the end of September and improve the stability of jet-fuel supplies. The company is also working with industry stakeholders to maintain supplies to key customers, including those at O.R. Tambo.

That means the immediate question is no longer simply whether there is enough fuel at the airport today. It is whether alternative supplies can continue to cover the gap if Natref takes longer to return to normal.

Why O.R. Tambo matters

The issue matters well beyond Johannesburg.

O.R. Tambo is South Africa’s main international aviation gateway and an important connecting point for traffic moving between Southern Africa and Europe, the Middle East, Asia and other African markets.

A prolonged fuel-supply problem could therefore create complications for airlines operating through Johannesburg. Carriers may have to adjust refuelling plans, carry additional fuel or make other operational changes. Those measures can increase costs even when flights continue operating normally.

Airlines have already begun planning for that possibility. Reporting from South Africa has confirmed that carriers are considering additional fuel carried from other airports as part of their contingency planning.

What passengers should do

For now, passengers travelling through O.R. Tambo do not need to assume that flights will be cancelled because of the Natref situation.

The sensible approach is to monitor airline updates, particularly for international journeys and tight connections.

Travel agents and tour operators should also keep an eye on the situation when arranging multi-leg itineraries through Johannesburg. If the disruption worsens, changes to refuelling arrangements could have knock-on effects even before airlines begin cancelling flights.

For the wider African travel industry, the episode highlights a problem that is easy to overlook: aviation depends on a fuel supply chain that has to work continuously.

South Africa’s airlines currently have alternatives, and Natref is working to restore normal operations. But the longer the disruption continues, the more important those alternatives become.

For now, O.R. Tambo remains operational. The story to watch is whether Natref can restore a more stable supply before airlines’ contingency measures become harder and more expensive to maintain.