Game-Changing Aviation Piston Engine

RED A03 - A piston engine with the power of a turbine and unbeatable efficiency.
500 to 600 hp

The most powerful piston engine on the market.

Operates with aviation kerosene


Up to


operating altitude

> 50% lower fuel burn

compared to turbine engines in the same power category

Piston Engine Redefined


Clean-sheet-of-paper, purpose-designed for aircraft application, not a compromise adaptation from automotive designs.

The RED A03 is a lightweight, all-aluminium, 12-cylinder, high-compression-ignition engine, with two six-cylinder banks capable of independent operation. The RED A03 is certified to operate on jet fuel.


High power density with impressive efficiency and altitude performance.

The RED A03 provides 500* horsepower takeoff power with a best in class fuel efficiency. The turbocharged air induction system sets new standards regarding altitude performance.

*certified. Power improvement to 550HP is in progress.
Electronic Engine Control

Full-Authority-Digital-Engine-Control (FADEC) certified to design assurance level B.

The engine is controlled via a fully redundant Electronic-Engine-Control-Unit. The single power control lever operation reduces pilot workload and increases safety. The FADEC is certified according to the civil aviation standards DO-178B for Software and DO-254 for Hardware.

Safety Concept

Two cylinder-bank redundancy concept for high safety.

Robustness and safety are incorporated into the engine design. The two 6-cylinder banks are capable of independent operation. All critical engine sub-systems are mutually-independent.

About RED aircraft GmbH

We are a fully certified, privately-owned German company specialising in the design, production, and servicing of high-feature compression-ignition engines and associated technologies such as powertrain electrification.

Additionally, we offer bespoke engineering design from scratch, testing, and optimisation services for specific customer projects. Our wealth of accumulated field experience, know-how, and lessons-learned allow us to deliver optimal customer solutions within fast turn-around times and competitive budgets. RED’s proven track record spans over 25 years of active involvement in powertrain development and is supported by awarded certifications and customer testimonials.

Ecological Footprint

A compression-ignition engine, such as the RED A03 drives many environmental benefits when compared with other equivalent propulsion solutions. Characterised by significantly lower CO2 emissions, the RED A03 is also an optimal platform for development of hybrid-electric aircraft installations.

High thermodynamic efficiency drives low fuel consumption. Optimised combustion results in reduced exhaust emissions. Low exhaust noise stems from intelligent engine architecture.

The RED A03 ecological features are

    • low fuel burn
    • low exhaust gas pollution
    • reduced noise emissions
    • high thermodynamic efficiency


The RED A03 engine family attained type certification in 2014 and is now validated in many countries around the globe.

RED aircraft GmbH holds design organization approval (DOA) from EASA since 2014.

Recent Press Releases

RED A03 Sustainable Aviation Fuel Tests For Celera 500L by Otto Aviation

16th Dec, 2021

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Maiden Flight of Retrofit Air Tractor 301 with RED A03 Piston Engine

23rd Nov, 2021

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Jürgen Schwarz Appointed as RED aircraft’s New CEO

10th Nov, 2021

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