This limits the full potential of carbon reduction that could be achieved through SAF usage. This is primarily because of safety concerns associated with using 100% SAF, which are feared to cause issues such as shrinking elastic tank seals leading to fuel leakage. If 100% SAF usage proves feasible and safe on the existing aircraft technology without material upgrades, then it would be positive for the sector because it would help accelerate decarbonization without material capital expenditure requirements. Other Key Challenges for SAF Transition Although 100% SAF usage is positive, the following are some other important challenges associated with SAF that the industry must overcome to enable wider SAF usage: Source : DBRS Morningstar