31-31-00  FLIGHT DATA SYSTEM Back

A. System Function

The flight data system monitors and keeps a record of the flight data. The flight data is kept in a solid state memory in the flight data recorder. The solid state memory is of the non-volatile type.

B. System Components

The primary components of the system are the:
  • Flight Data Recorder (FDR) (Ref. Fig. 1)
  • Flight Data Acquisition Unit (FDAU) (Ref. Fig. 1)
  • Three-axis accelerometer (Ref. Fig. 3)
  • Left aileron position-potentiometer (Ref. Fig. 2)
  • Left elevator position-potentiometer (Ref. Fig. 1)
  • Left pitch-trim position-potentiometer (Ref. Fig. 3)
  • Rudder position potentiometer. (Ref. Fig. 2)
C. System Operation

The system operates when the:
  • Double-generator fail relay 1PB10 is energized
  • Left or the right 115 V ac busbar is energized
  • 28 V dc left essential busbar is energized.

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