Scheduled Maintenance We will be conducting scheduled maintenance on May 14th from 09:00 PM EST to May 15th 09:00 AM EST. During this time Aerospace applications will be temporarily unavailable. We apologize in advance for any inconvenience.
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Understanding the ADIRU

An Air Data Inertial Reference Unit (ADIRU) is a key component of the integrated Air Data Inertial Reference System (ADIRS), which supplies air data (airspeed, angle of attack and altitude) and inertial reference (position and attitude) information to the pilots' electronic flight instrument system displays as well as other systems on the aircraft such as the engines, autopilot, aircraft flight control system and landing gear systems.[1] An ADIRU acts as a single, fault tolerant source of navigational data for both pilots of an aircraft.