CMU-900 Communication Management Unit


Technical Support

Features & Benefits

  • Compliant ARINC 758 communications management unit: Delivers state-of-the-art Data Link communication management that complies with industry standard ARINC Characteristic 758 installations.
  • Compliant with FANS interoperability and VHF/VDL mode 2 networks: Provides fully compliant ARINC AQP and SITA VAQ testing and is qualified by Boeing FANS-1 for interoperability.
  • Link 2000+ protected mode CPDLC certified: Certified for the 2011 European Link 2000+ mandate for air traffic control communication over the VHF Digital Link (VDL) Mode 2 and Aeronautical Telecommunications Network (ATN).
  • Supports and manages multiple air-to-ground subnetworks: VDL Mode 2, Plain Old ACARS, VDL Mode 2, Inmarsat and Iridium satellite Data Link communications, and HF Datalink.
  • Flexible AOC development tool: Provides a powerful user application development capability, allowing you the option of modifying and testing your own Data Link nonessential AOC application changes, and supports a completely modifiable AOC Application without certification impact.
  • Capable AOC PC-based simulation tool: Provides a powerful PC based-simulation capability that is extremely useful as a prototyping and training tool.
  • Experienced operational and technical support: Backed by the expertise and experience of support, service, and engineering staff to assure successful Data Link integration and deployment.

Related Documents

General Information


A complete range of technical information is available to support your operation and maintenance needs. The technical publications index allows you to identify the most current version of a publication, service bulletin or related document by part number, equipment type, system and similar functions. To search the index, use the global search box in the upper right corner of the page. If necessary, click the Pubs and Training tab to see results from the technical publications index.

You can also continue to use our legacy index.

Authorized users of the technical publications index can also view all of their pubs on our dashboard. Just log in, then move your mouse over the My Account menu button and choose Dashboard.


Our instructional design specialists and staff of experienced instructors have developed and support your operator and maintenance training requirements. We offer a host of solutions to maximize your investment. On-site and customized training are available.

Our Learning Management System allows you to review course schedules for Instructor Led Training (ILT) and computer based training (CBT) offerings. Register as a student and enroll or take courses online. A username and password is required.

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Services & Support

Field Support Services

Our customer service engineers (CSEs) and global network of service centers and dealers provide you with the support you need for your personal aircraft, corporate aircraft or commercial air carrier.

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Tailored Services

We offer a broad portfolio of service solutions, tailored to meet your specific operational objectives. Rockwell Collins' Dispatch program is an extended warranty program based on a price per flight hour, and is customized to fit your needs. The program supports regional and commercial airlines and provides you with around the clock service. Managing your spares and parts, we offer you guaranteed availability to ensure you have the necessary parts on time.

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Collins Aerospace facilities and capabilities allow us to offer a variety of support solutions from time and material repairs to price per flight hour asset management solutions. What ever your operational objectives, we have a solution to support your life cycle service requirements.

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Maintenance & Repair

Collins Aerospace Service Centers are strategically located throughout the world to provide maintenance on our equipment, both in and out of warranty. Overhaul and repair service can also be obtained at each location. As new products are introduced, service center capabilities are continually updated to support them. Located within each Service Center is a dedicated Customer Service Representative, available to answer questions or address problems.

To access a list of our global service locations access our Repair Equipment Directory 

If you would like information how to order repair parts or receive a quote, follow the link to the online shop.  

Spares & Parts

Our world-wide Rental/Exchange Service is ready to provide for your operational needs—24 hours a day, 7 days a week. We offer an extensive asset inventory and support system to deploy parts where and when you need them.

Phone: 1-800-713-7693 (within the U.S. only) or 1-319-295-4361
Fax: 1-319-295-6646

Access our Rental and Exchange Catalog. Registration is required.

To order Repair Parts or receive a quote, follow the link to the online shop.

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Technical Support