Pratt & Whitney and Embraer have successfully tested a GTF-powered E195-E2 aircraft on 100 percent sustainable aviation fuel (SAF). The test, with one engine running on 100 percent SAF, validated that GTF engines and the E-Jets E2 family can fly on both engines with blends of up to 100 percent SAF without any compromise to safety or performance. The aircraft completed two days of ground tests at Fort Lauderdale International Airport, culminating in a 70-minute flight test at Vero Beach Regional Airport in Florida.
“The E2 is already the most efficient single aisle aircraft flying today, saving up to 25 percent CO2 emissions compared to previous generation aircraft. This reduction in emissions can be increased up to an impressive 85 percent with 100 percent SAF. Replacement of older aircraft by new generation products and scaling up SAF production are the two most effective actions commercial aviation can take now to achieve a significant reduction in emissions,” said Rodrigo Silva e Souza, vice president strategy and sustainability at Embraer Commercial Aviation. “Embraer and Pratt & Whitney are leading the industry with products that are more efficient for our customers and more sustainable for our society. This test demonstrates that the E2 is ready for 100 percent SAF certification and operation once the industry finalises standards.”
All Pratt & Whitney engines and Embraer aircraft are currently certified to operate with SAF blended up to 50 percent with standard Jet A/A1 kerosene, according to ASTM International specifications. Future specifications will enable blends of up to 100 percent SAF to maximize the emissions reduction potential of using fuel derived from sustainable, non-fossil-based feedstocks.
The SAF used by Embraer and Pratt & Whitney was 100 percent 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.
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