A03-003 and 005

The A03 with the standard gearbox for NORMAL category aircraft, commuters and agricultural aircraft. The core design feature is regular operation, non-inverted, regular g-load considerations. This gearbox variant can be combined with the 500 and 550 hp power versions as well as high altitude mission layouts.

As the gearbox is integrating the oil management, this installation is needs less installation consideration and less 3rd party system integration.

A03 type design is certified in compliance to EASA CS-E / TYPE-CERTIFICATE-DATA-SHEET No.: E.150.





  • Dry-sump oil system.
  • Integrated engine oil and gearbox oil tank.
  • Integrated engine oil and gearbox oil heat exchanger.
  • Designed for lean maintenance.
Normally included:
  • FADEC & electric looms
  • Engine starter
  • Engine and gearbox oil subsystem
  • incl. oil tank and heat exchanger
  • Exhaust system and turbochargers

Possible options:

  • propeller governor
  • engine display
  • fuel boost pumps and regulators
  • alternators

Technical details

No. of cyl and arrangement
Fuel type
Power A03-x03
Power A03-x05
Power A03-non aviation use (project state)
Bore & stroke
Valves per cylinder
Camshaft system
Fuel system
Electrical system
Reduction gear
Dry mass with normal/utility gearbox
Fuel Flow take-off power
Fuel Flow MCP
Fuel Flow 400 hp
Fuel Flow 300 hp
Engine control system
V12 – 80°
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)
500 hp – 368 kW/4,000 rpm
550 hp – 405 kW/4,000 rpm
600 HP – 441 kW
372 CUI – 6.1 l
3.38″x3.46″ – 86×88 mm
gear driven dual overhead camshaft
Single stage system
Common rail high preasure system 1,600 bar – 23,206 psi
2x28V 3.5 kW alternator
363 kg – 800 lbs
85/91 KG/H – 187/200 lbs/h
77 KG/H – 169 lbs/h
65 KG/H – 143 lbs/h
47 KG/H – 103 lbs/h
FADEC, EECU, EECS, sensors, Design Assurance Level B cert. compliant RTCA DO-254, DO-178B, DO-160G