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Flight Data Acquisition Unit (FDAU)

A device that acquires aircraft data via a digital data bus and analog inputs and that formats the information for output to the flight data recorder in accordance with requirements of regulatory agencies. In addition to the mandatory functions, many FDAUs have a second processor and memory module that enables them to perform additional Aircraft Condition Monitoring System (ACMS) functions/reports. The FDAU can provide data and predefined reports to the cockpit printer, directly to Aircraft Communications Addressing and Reporting System (ACARS) for transmittal to the ground, or to a Quick Access Recorder (QAR) for recording/storage of raw flight data

. The FDAU can also display data for the flightcrew.

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