EH Industries' Merlin HC.3 will use a helicopter integrated defensive aids suite including the GEC-Marconi Sky Guardian 2000 RWR, an active IR jammer, passive missile warning system, Raytheon AN/AVR-2A laser warning system, and Tracor AN/ALE-47 countermeasures dispensers.

This view of the tail of a MH-60K shows the AN/AAR-47 missile warning sensor equipment, radar warning receiver and radar jammer antenna locations.

MH-60K Special Operations Aircraft have the most comprehensive ASE suite of any Army helicopter. The white dome is a mock-up of the ALQ-212 directed IR countermeasures head.

Northrop Grumman’s AN/ALQ-24 Nemesis directed IR countermeasures system has been tested on a UK Royal Navy Sea King.

Lockheed Martin's AN/ALQ-157 IR countermeasures set, seen here on the rear rotor fairing of an RAF Chinook HC.1, broadcasts IR energy to deceive missile seekers in conjunction with decoy flares. It is used on larger helicopters including the CH-53.

Like the US Marine Corps MV-22 Osprey, the USAF CV-22 tilt rotor is scheduled to receive the AAR-47. However, the choice of a directed IR jammer could introduce the AAR-57 or AAR-54 into CV-22 plans.

From an integrated EW standpoint, the most capable attack helicopter in service is the AH-64D Apache with its AN/APG-78 Longbow fire control radar, AN/APR-48 radio frequency interferometer.

A Sidewinder-armed US Marine Corps AH-1T in the Persian Gulf in 1987 carries the ALQ-144 IR jammer under the main rotor, APR-39 radar warning receiver on the tailboom, and ALE-40 flare dispensers on stub wings. Discrete elements of ASE will be managed by a central controller in modern integrated EW suites.