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 Flight Director

Flight Director Functions

  • An FD is an extremely useful aid that displays cues to guide pilot or autopilot control inputs along a selected and computed flight path.
  • The flight director usually receives input from an ADC and a flight data computer. The ADC
  • supplies altitude, airspeed, and temperature data, heading data from magnetic sources such as flux valves.
  •  Heading selected on the HSI (or PFD/multi-function display (MFD)/ electronic horizontal situation indicator (EHSI)), navigation data from FMS, very high frequency omnidirectional range
  • (VOR)/distance measuring equipment (DME).
  • and RNAV sources. The flight data computer integrates all of the data such as speed, position, closure, drift, track, desired course, and altitude into a command signal.

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