A03 Engine A03 Technical Data

A03 Certificates

Our certificates

New Zealand CAA
DOA EASA.21J.433 and TCDS E.150 - Updated 2022-07
The Russian Federation CAA
Produced in an EN9100 certified environment
Made in Germany
A03 Engine A03 Technical Data


Full authority digital engine control
FADEC by RED Aircraft

  • Developed and certified according to DO-254 DAL B. The software  
  • Voll redundanter Aufbau mit zwei identischen Lanes
  • IBIT und CBIT Überwachung mit automatischem Lanewechsel im Fehlerfall
  • Betriebsdaten- und Fehleraufzeichnung
  • CAN-Bus Interface zur Fehleranalyse und Auswertung der Betriebsdaten
  • Serielle Schnittstelle zum Cockpit
  • Optionale bidirektionale Schnittstelle
  • Intelligenter Watch Dog
  • The EECU operates two independant and seperately operational Lanes.
  • All sensors for the core controller functions are fully redundant.
  • In case of a sensor failure for non-essential controller systems, the values are replaced by data provided in the other segment.
  • Informelle Sensoren (nicht regelungsrelevant) sind einfach vorhanden, werden aber von beiden Lanes gelesen
  • Stromversorgung der FADEC ist für zwei unabhängige Systeme ausgelegt
A03 Engine Press Release

RED A03 achieved the TCDS extension for 550 hp

RED Aircraft A03 V12-cylinder compression ignition engine now available with 550 hp/405 kW.

RED Aircraft is a brand of Raikhlin Aircraft Engine Developments GmbH based in Adenau, Germany. RED Aircraft develops highly sophisticated and innovative engine solutions for motorsports and aviation. The award winning RED A03 series is a V12 compression-ignition engine, offering 500-550 hp/367-405 kW and is targetted to the GA, small commercial aircraft and UAV market intending to improve the eco balance in avoiding inefficient gas turbine designs.

The RED A03 engine holds the EASA TCDS E.150. We are very proud to annouce that our highly experienced engineering team was able to demonstrate the reliable engine operation with a FADEC version allowing 550 hp/405 kW. This allows higher power loads for the typical take-off and cruise performance. Our customers are now able to select the power version suitable for their target needs. Follow this link to the EASA TCDS. The EASA reference shall be updated within the next few days.

This is a result of a combined effort of software design in the FADEC as well as hardware reliablity proof on the mechanical side. Of course we are very proud that EASA was pleased with the results and amended the TCDS accordingly. The Canadian and US TCDS will be updated accordingly.

A03 Engine

RED A03 Mission profile

  • RED engines are qualified for all categories-classes-types of CS-23 and CS-27 aircraft including:
    • Utility
    • Commuter
    • Aerobatic
    • Agricultural Application
  • Innovation concepts from air taxis to electric helicopters
  • Aircraft for high altitude application.
  • UAV
  • LTA – Blimp – Airships
  • Groundeffect and Hovercraft
  • Maritime application
  • Generators and eHybrid solutions, land- air- or sea-based
  • Please contact us if you think about specific missions not listed here.
A03 Engine

RED A03 Key Design Features

► Operates with Jet-A fuels

► High safety level with independent circuits for each engine bank:

○ air induction system

○ fuel system

○ cooling system

► FADEC single lever engine control

► Turbocharged

► Self-carrying structure for cantilever installation

► Dry-sump oil system

► heat exchanger

► Designed for lean maintenance

500 hp A03-x03 series EASA TCDS E.150

550 hp A03-x05 series EASA TCDS E.150

► 600 hp A03-xxx series project state, non aviation use.


► Single or twin-stage turbocharge system for utility or high altitude application, A03-20x series.

► Utility gearbox for normal operation including oil reservoire. A03-10x series

► Aerobatic gearbox for inverted operation, external oil reservoire required

► Variable attachment frames for additional alternators and pumps.

► Firewall-forward kit development

► Cooling, Intercooler, thermal management design assistance.

A03 Engine A03 Technical Data

RED A03 Technical Data



No. Of cyl
and arrangement

V12 – 80°

Fuel type

Jet A1, kerosene type fuels acc. To
ASTM D1655, Def Stan 91-91 and GOST 10227 up to a maximum ignition delay time of 8.06 ms/minimum derived cetane number of 27.9 (determined according EN 15195/ASTM D6890)

Power A03-x03

500 hp – 378 kW/4,000 rpm

Power A03-x05

550 hp – 405 kW/4,000 rpm

Power A03-non aviation use (project

600 HP – 441 kW


372 CUI – 6.1 l

Bore & stroke

3.38″x3.46″ – 86×88 mm

Valves per cylinder


Camshaft system

gear driven dual overhead camshaft


Single or 2-stage system

Fuel system

Common rail high preasure system 1,600 bar – 23,206 psi

Electrical system

2x28V 3.5 kW alternator

Reduction gear


Dry mass w/o gearbox

290 kg – 640 lbs

Dry mass with normal/utility

363 kg – 800 lbs

Dry mass with aerobatic gearbox

357 kg – 787 lbs

Fuel Flow take-off power

85 KG/H – 187 lbs/h

Fuel Flow MCP

77 KG/H – 169 lbs/h

Fuel Flow 400 hp

65 KG/H – 143 lbs/h

Fuel Flow 300 hp

47 KG/H – 103 lbs/h

Engine control system

FADEC, EECU, EECS, sensors, Design Assurance Level B cert. ompliant RTCA DO-254,
DO-178B, DO-160G