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Mods Catalog

Welcome to the Heli-One online modifications catalogue.

You can browse Heli-One's modifications by aircraft type, mission purpose or ATA code. Use the search function to look up modifications as well.

Within each modification listing, you can learn more about each modification's purpose, certifications, weight, and installation time. You can also email the modification to others by clicking on the EMAIL link at the bottom of each listing. You contact the Heli-One team for further information on pricing and installation by clicking the CONTACT US button at the bottom of the listing. You can also contact Heli-One directly: 1-877-243-4573 ext. 109

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    • AS332
    • Military
    Infrared Suppression System
    Protection from Heat Seeking MissilesProject No. CHA332-78-001
    Provides enhanced safety while operating VFR and IFR in environments 
    where shoulder-launched or other heat seeking missiles may be in hostile hands. Decreases the IR visibility of the aircraft with minimal consequence 
    to performance.

    Modification details

    Title Infrared Suppression System
    Aircraft Aircraft Here
    Approvals ​​ TCCA STC, Swedish Military
    Purpose Protection from heat-seeking missiles 
    Weight of Kit ​96.4kg
    Installation Time Low

    Description of modification

    Developed by Heli-One’s partner Davis Engineering, the Infrared Suppression System is an exhaust cooling system that decreases the IR visible exhaust plume of the rotorcraft by about 90% while not decreasing engine power measurably; only decreasing maximum speed of the machine by 2 knots and not affecting handling at all. The installation involves a small modification to the aft transmission housing to install a structural frame to which the exhaust ducts attach, as well as modification to the engine tail pipe and installation of mounting brackets on the fuselage. The whole exhaust assemblies are hinged and can be rotated up for routine maintenance.
    • ATA: 78 Exhaust
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