The Cougar transport helicopters are equipped with a comprehensive self-protection package. One of the self-protection is the ISPS (Integrated Self-Protection System). This computer-controlled system consists MAWS (Missile Approach Warning System), the RWR (Radar Warning Receiver) and an Advanced Countermeasures Set (ACMS).
The MAWS alerts the crew in a rocket attack. The RWR ensures that the crew is alerted when it is followed by a radar system. The system recognizes the signals from radar systems (hunting) aircraft, missiles and ground stations. On the basis of this information, the ACMS take the proper countermeasures.