Defensive aid systems

Modern, robust technology

We are highly experienced in DAS design, manufacture and support.


Countermeasures Dispensing Systems (CMDS)

Petards Defence Services offer a full range of technical support services for Countermeasures Dispensing Systems (CMDS), including cockpit control, programming, build, installation advice, repair and servicing.

ALE-47 Threat Adaptive Countermeasures Dispensing System (TACDS)

We are the licensed manufacturer of the internationally renowned ALE-47 Threat Adaptive Countermeasures Dispensing System (TACDS), including the pre-flight message creation and validation systems. TACDS are used by the British Army, the Royal Air Force and the Royal Navy across a range of rotary, fixed wing and fast jet platforms.

Petards Defence Services has supported the integration of the ALE-47 TACDS into the Common Defensive Aids Suites (CDAS) and NATO Defensive Aids Suites (NDAS) which allow Open Architectures and common message sets between defensive equipment.

We have developed a Pre-Flight Message/Mission Data File Validation Facility for the ALE 47 TACDS, which is installed on the majority of the UK's military aircraft. This allows engineers to fully exercise a development PFM/MDF, including its integration with associated elements of a Defensive Aids Suite (DAS), before it is installed on an aircraft, enabling huge reductions in flight line testing and verification.

Missile Warning Systems (MWS)

Petards Defence Services has a full depot repair and refurbishment facility for the AAR-47 Missile Warning System equipment, ensuring a cost- effective, fast turnaround service.

This was the first full facility outside of the US, and is approved as a European Base for maintenance of the full range of AAR-47 versions including the Laser Warning function of the (V)2 generation.


Defensive aid systems 

For more information

Call +44 (0) 191 423 5145 or email

Our customers

Numerous key defence organisations and companies work with Petards Defence Solutions, including: