ADIRU

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ADIRUAir Data Inertial Reference Unit
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References in periodicals archive ?
ATSB said exhaustive tests of the Qantas Airways Airbus A330's malfunctioning air data inertial reference units proved inconclusive.
The Australian Transport Safety Bureau says tests of the system's three air data inertial reference units aim "to understand what led to the pitch-down events in order to provide basis to eliminate the problem at its source".