EFIS Colour Codes RNAV

The colour schemes of an EFISEFIS —Electronic Flight Information System have been designed with our instinctive human reactions and natural understanding in mind. So:

  • Earth is brown
  • Sky is blue
  • Cautions are amber or orange
  • Dangers (warnings or limits) are red

The only features outside of this are:

  • Engaged modes, which are green
  • The ILSILS —Instrument Landing System pointer, which is magenta
  • The Flight Director bar, which is magenta or green

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What colour would you expect Warnings to be displayed in under standard colour code rules for an EFISEFIS —Electronic Flight Information System?
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