Singapore reviewing study findings on use of sustainable aviation fuels at Changi Airport Toggle share menu Advertisement Singapore Airlines planes pictured on the tarmac at Changi Airport. (Photo: Reuters/Edgar Su) 03 Aug 2021 01:20PM) Share this content Bookmark SINGAPORE: Government agencies are reviewing the findings of a study conducted on the operational and commercial viability of using sustainable aviation fuels at Changi Airport, Transport Minister S Iswaran said on Tuesday (Aug 3). Such fuels can be produced from sustainable resources such as waste oil. Advertisement Advertisement It can reduce carbon emissions by up to 80 per cent, compared with conventional jet fuel on a lifecycle basis, but it is two to five times more expensive, Mr Iswaran said in Parliament.