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  • Post category:Avionics
  • Post last modified:October 3, 2021

The air data inertial reference system (ADIRS) has two primary functions:

  • Air data reference (ADR)
  • Inertial reference (IR)

The ADR function calculates:

  • Airspeed, and
  • Barometric altitude

The IR function calculates this data:

  • Attitude
  • Present position
  • Groundspeed
  • Heading

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