The Most advanced, market leading solution for Airborne AIS Transponder R4A MKII

The AIS technology is not only for maritime vessels, it can also be used on board aircraft, provided that it is airworthy. Saab's R4A  MkII – Airborne AIS Transponder can be used for sea surveillance, search and rescue and other marine avionics applications.


The R4A MkII is developed specifically for airborne use, meeting the relevant requirements for onboard installation. R4A MkII can be installed either as a standalone unit or integrated with other onboard systems such as Mission Management Systems or Digital Map Generators.

Saab has been developing and producing military and commercial aircraft for more than 60 years, and the company has also a long tradition of integrating avionics. Based upon this knowledge and capability, every effort has been made to ensure the quality and reliability of the R4A MkII. We can also offer our customers access to Saab’s global after sales support organisation.

Previous model: The 4th generation airborne AIS is end of sale but still supported.