ATA 31

What are the two primary functions of the Flight Data Interface and Management Unit (FDIMU)?. Flight Data Interface Unit (FDIU) and Data Management Unit (DMU). Data Loading Selector (DLS) and Multipurpose Disk Drive Unit (MDDU). Digital Flight Data Recorder (DFDR) and Quick Access Recorder (QAR). Linear Accelerometer (LA) and System Data Acquisition Concentrator (SDAC).

What does the FDIU-part of the FDIMU do with the input parameters?. Transmits them to the Digital AIDS Recorder (DAR). Converts, compares, and checks them. Records them in data frames. Routes them to the Data Loading Routing Box (DLRB).

When does the FDIU-part check the integrity of the mandatory parameters during a flight?. Continuously throughout the flight. After the engines are shut down. Before engine start. Only during maintenance checks.

What is the purpose of the underwater locator beacon on the DFDR?. To activate the DFDR. To provide the location of the recorder in water after an accident. To transmit data to the CFDIU. To transmit data to the CFDIU.

How long does the DFDR store data?. 24 hours. 48 hours. 25 hours. 72 hours.

What type of data frames are stored in the Quick Access Recorder (QAR)?. Identical to the DFDR data frames. Data frames with additional information. Video data frames. Audio data frames.

What is the purpose of the Data Loading Selector (DLS)?. To select the computer on which data will be loaded. To upload or download data. To stow data disks. To route data between the disk unit and target computer.

The Flight Data Interface and Management Unit (FDIMU) combines two functions: the Flight Data Interface Unit (FDIU) and the ____________. Data Management Unit (DMU). Quick Access Recorder (QAR). System Data Acquisition Concentrator (SDAC). Linear Accelerometer (LA).

The FDIU-part of the FDIMU converts, compares, and checks the input parameters for the Digital Flight Data Recorder (DFDR), optional Quick Access Recorder (QAR), and the Digital AIDS Recorder (DAR). This conversion process is crucial for data ____________. recording. transmission. storage. analysis.

The DFDR stores data for the last ____________ hours, with each data frame containing information from one second of flight. 28. 48. 25. 72.

The Quick Access Recorder (QAR) records the same data parameters as the DFDR but is primarily used for on-ground performance, maintenance, and condition monitoring tasks. It also includes Built-In Test Equipment (BITE) functions to ensure data ____________. accuracy. integrity. encryption. compression.

The LA generates an analog signal, which is then digitalized and sent to the FDIU-part through an ____________ bus. Ethernet. USB. ARINC 429. HDMI.

The Data Loading Selector (DLS) is responsible for selecting the ____________ on which data will be loaded during maintenance processes. computer. technician. disk drive. software.

The Multipurpose Disk Drive Unit (MDDU) is used to upload or download data, and it has a stowage box with a maximum capacity of ____________ data disks. 12. 24. 36. 42.

The FDIU-part of the FDIMU records data frames for the Digital Flight Data Recorder (DFDR), Quick Access Recorder (QAR), and Digital AIDS Recorder (DAR). True. False.

The DFDR stores data for up to 48 hours, with each data frame containing information from one second of flight. True. False.

The Quick Access Recorder (QAR) primarily records data for in-flight analysis and crash recording purposes. True. False.

The Linear Accelerometer (LA) measures acceleration in all three axes, with a range of measurement from -3 to +6 g in the vertical (Z) axis. True. False.