Piper Seminole Jet Fueled Engine

DeltaHawk Engines is developing a new Supplemental Type Certificate (STC) for installation of their engine in Piper’s legendary PA-44 Seminole twin in both new and retrofit aircraft. The Piper Seminole will soon benefit from DeltaHawk’s powerful innovation—providing owners and operators with a forward-thinking solution that future-proofs their airframe and removes all uncertainty surrounding the future of AVGAS.

By upgrading to a Jet-A-powered DeltaHawk engine, pilots can take advantage of globally available fuel while significantly lowering operating costs for their Piper Seminole aircraft. With a 40% reduction in total cost of ownership—including improved fuel efficiency and simplified maintenance—this upgrade future-proofs airframes and redefines expectations for general aviation.

Designed for easy operation and lower operating costs, the DeltaHawk engine eliminates many of the complexities found in traditional piston engines designed for the Piper Seminole. With no mixture control, no risk of shock cooling, and single-lever power management, pilots can focus more on flying and less on engine management. The engine’s turbocharged and supercharged design delivers exceptional altitude performance, maintaining power at higher elevations. Burning Jet Fuel and SAF, the engine ensures worldwide fuel availability while supporting the industry’s push toward carbon neutral aviation. Engineered with 40% fewer parts than comparable engines, it minimizes maintenance, boosts reliability, and enhances safety. With its proven efficiency—offering 35-40% lower fuel consumption than traditional AVGAS engines—this new powerplant STC redefines expectations for general aviation, providing a cost-effective, high-performance alternative to legacy powerplants.