Available Late 2010
Universal Avionics Attitude Heading Reference System (AHRS),
AHS-525 is designed to meet the advanced accuracies
required for the next generation flight deck, and seamlessly
replaces existing analog directional and vertical gyros.
It integrates with flight deck displays, flight control systems,
flight management systems, weather radar, terrain awareness
and warning system, flight data recorder and a host of
additional avionics systems. When interfaced with Universal
Avionics’ EFI-890R, data display and control is managed
directly through the EFIS, without the need for additional
heading control panels that clutter the flight deck.
The AHS-525 provides stable and accurate aircraft analog
and digital pitch, roll and heading measurements. The unit
is designed with Microelectromechanical Systems (MEMS)-
based technology, a system that combines the computational
ability of microelectronics with the acuity and control of
microsensors and microaccelerometers. This solid-state
construction, with no internal movable parts, increases unit
reliability.

AHRS Attitude Heading Reference System
System installation components include the Attitude Heading
Reference Unit (AHRU), configuration module to store configuration
data and alignment offset values, external remote magnetometer
for magnetic heading data, and a precision mounting plate that
is permanently affixed to the aircraft. The fixed mounting
plate allows the unit to be removed for service
and replaced without repeated and timeconsuming
realignment of the system.
The unit’s compact size lends flexibility
to installation, with possible mounting
locations in pressurized, non-pressurized,
controlled and non-controlled temperature
environments.
The AHS-525 features digital, analog,
discrete and synchro inputs and
outputs (I/O) to support a wide
variety of interfaces on Part 23,
Part 25, Part 27 and Part 29 aircraft.