All Pratt & Whitney engines and Embraer aircraft are currently certified to operate with SAF blended up to 50% with standard Jet A/A1 kerosene, according to ASTM International specifications. Future specifications will enable blends of up to 100% SAF to maximize the emissions reduction potential of using fuel derived from sustainable, non-fossil-based feedstocks.
“SAF is a core part of our sustainability road map, and we continue to work with industry partners and regulators to support the development of a drop-in standard for 100% SAF,” said Graham Webb, chief sustainability officer at Pratt & Whitney. “This test proves that GTF engines can operate on any fuel, and that the E-Jets E2 family is ready for 100% SAF certification once the industry finalizes the standard for unblended SAF.”
The SAF used by Embraer and Pratt & Whitney was 100% Hydroprocessed Esters and Fatty Acids Synthetic Paraffinic Kerosine (HEFA-SPK) acquired from World Energy. HEFA-SPK is a specific type of hydrotreated renewable feedstock fuel used in aviation and is considered a leading alternative replacement for conventional jet fuel by the Commercial Aviation Alternative Fuels Initiative (CAAFI), due to the sustainability of its feedstock.
The Pratt & Whitney GTF™ engine is the only geared propulsion system delivering industry-leading sustainability benefits and world-class operating costs. It is the exclusive powerplant of the Embraer E-Jets E2 family, which reduces fuel consumption and CO2 emissions up to 25% per seat, NOx emissions by 50% and noise footprint by 75%.* Certified for operation on 50% sustainable aviation fuel (SAF) and successfully tested on 100% SAF, the engines are capable of even lower carbon emissions, which will help the industry meet its target of net zero emissions by 2050. The engine’s revolutionary geared fan architecture is the foundation for more sustainable aviation technologies in the decades ahead. Learn more at pwgtf.com.
*Reductions vs. prior generation aircraft, based on 75 dB noise contour and ICAO CAEP/6 emissions regulations.