Integrated Modular Avionics

Integrated Modular Avionics (English Integrated Modular Avionics, short IMA) denotes an airworthy, modular computer electronics unit of standardized components and interfaces in hardware and software for communication between the different systems in an aircraft. The IMA concept was developed by the French arms company Thales, in cooperation with the German Diehl Aerospace.


The consistent use of the IMA concept for the various systems within the aircraft also allows the multiple use of computer units for different systems, and thus reduces the previously necessary number of separate computer units. Due to the standardized computer units and the data network technology (eg AFDX ) the user software for the various systems is provided a uniform interface. Air vehicle manufacturers thus benefit from weight reduction and energy savings, lower operating and maintenance costs, and the reduced number of computer units to be certified.


The IMA concept was first used by Boeing in the 777 and then at Airbus in the A380 used. It will also come in the A400M and the A350 used. The A400M provide a more robust structure for increased vibration resistance, improved lightning protection and increased EMC to meet the stringent requirements of the military version of IMA.

Meanwhile, the avionics of all newly developed passenger aircraft such as the Bombardier CSeries, Comac C919 and the Irkut MS- 21 is based on the IMA concept.


The IMA concept is now a buzzword for many developments of modular avionics, which go far beyond the original concept. In development are technologies that standardize not only the hardware but also the software interface. Well-known examples are, eg, ARINC 653 and STANAG 4626th

  • Avionics