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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    • S-76
    • AS332
    • SAR
    • Offshore
    • Utility
    • LAW
    • Military
    • EMS
    Enhanced Ground Proximity Warning System
    Honeywell Mark XXII EGPWSProject No. CHA332-034-027
    Honeywell Mark XXII EGPWS is specifically configured for the dynamic factors of rotary-wing performance, which prevents Controlled Flight Into Terrain (CFIT) accidents by providing pilots with enhanced situational awareness.

    Modification details

    Title Enhanced Ground Proximity Warning System
    Aircraft AS332 (L/L1), S-76 (A/C)
    Approvals FAA STC, TCCA STC
    Purpose Helicopter Terrain Awareness and Warning System
    Weight of Kit 3.1kg + additional components based on configuration
    Installation Time High

    Description of modification

    This modification is a fully-featured Helicopter Terrain Awareness and Warning System (HTAWS) with FAA TSO-C151b Class A and TSO-C194 approvals. The enhanced features include extensive worldwide terrain and obstacle database, look-ahead algorithms, internal GPS card, HD terrain imagery and multiple operation modes. In the event of exceeding boundaries of any alerting envelope, the EGPWS provides the flight crew with aural alert messages, visual annunciations and terrain displays, which interface with aircraft audio system, annunciators and EFIS or MFD. Multiple muting options are available for operators who regularly conduct low level operations. Depending on aircraft configurations, the EGPWS system can obtain aircraft position information either from its internal GPS system (a new GPS antenna required) or from an existing GPS system.
    • ATA: 34 Navigation
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