Digital Flight Data Acquisition Unit

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Term Digital Flight Data Acquisition Unit
Status


Mandatory for


Contexts


Categories
Synonyms


Related entries

Digital Flight Data Recorder (DFDR)

Flight Data Acquisition Unit (FDAU)

Broader term


Narrower term


Abbreviation

DFDAU

Definition

an electronic device that collects, samples, conditions, and digitizes analog, discrete, and digital signals representing aircraft functions. It supplies a serial digital bit stream to the DFDR.

Definition Source

FAA (1999) Advisory Circular 20-141, AIRWORTHINESS AND OPERATIONAL APPROVAL OF DIGITAL FLIGHT DATA RECORDER SYSTEMS [1]

Note

A DFDAU differs from a Flight Data Acquisition Unit (FDAU) in that a DFDAU is capable of receiving both analog and digital data streams and converting them to the required DFDR digital data format. (See Aeronautical Radio Incorporated (ARINC) Characteristic 717.)