AHS-4000 Attitude and Heading Reference System


Bombardier Challenger
The Collins Aerospace AHS-4000 Attitude and Heading Reference System (AHRS) features a distinctive solid-state design in a small, lightweight package. The embedded low-power fiber-optic gyro and triple-axis MEMS accelerometers ensure high reliability and low power consumption. Continuous monitoring of all functions and internal diagnostics gives you a high-integrity system. You can operate the AHS-4000 in several modes to provide your aircraft with the most accurate navigation data based on available inputs. After self-aligning, the system operates like an Inertial Reference System, providing free inertial navigation position and velocity outputs along with the basic AHRS functions. For higher precision calculations, the AHS-4000 can use GPS inputs.
  • Rugged solid-state design: Fiber optic gyro and triple axis MEMS for self-aligning without using magnetic sensors.
  • Multiple modes of operation: Standard magnetically augmented ARINC 705 AHRS, GPS-aided or unaided free inertial.
  • ARINC 429 capability: Standard ARINC 429 data I/O format.
  • Optional synchro input interface: The attitude and heading reference input data can be provided by an analog synchro interface.
  • Enhanced fault isolation: Reduces trouble shooting through the use of internal diagnostics and nonvolatile memory.
  • Reduced cost of ownership: Through increased availability of the system.


  • Sales & Marketing



This site uses two types of cookies:

  1. Google Analytics Cookies for aggregate, anonymous statistics on the number of visits to the site. These cookies do not allow us to identify you. If you object to these anonymous cookies, click here to learn how to configure your browser to delete these cookies and prevent them from being placed again.
  2. A Banner Cookie, which does not track or identify you, but rather makes this cookie banner appear just once. Click ACCEPT to consent to the cookie, otherwise this banner will continue to appear.