The Airborne and Space Systems Division has the design authority and is the prime contractor of the OTS-90, the sonic system selected of the NFH 90 helicopter for Italian and Dutch Navies.
OTS-90 is an advanced, integrated system which maximizes the probability to early detect and classify any potential underwater threat.
It is composed of two main subsystems: Low Frequency Dipping Sonar Subsystem, Sonobuoy Subsystem, Integrated by means of a Common Acoustic Processor (CAP).
The Dipping Sonar Subsystem (DSS) derives from the HELRAS Low Frequency Sonar developed by L-3 Ocean Systems and is manufactured under L-3 O.S. license, for the NFH 90 program, by ELAC NAUTIK (D), FOKKER ELMO (NL) and Selex ES (I).