CHAPTER 4 REFERENCE GUIDE
EFD1000 PRO MAX PFD Pilot’s Guide
Page 4-32
091-00005-002 ()
4.5.5 Course Deviation Indicator and Scale
Selected course deviation is depicted by a Course Deviation Indicator and Scale.
Deviation is indicated by positioning the Course Deviation Indicator on the Scale
corresponding to the lateral deviation value.
The 360° and ARC HSI Compass Modes show the CDI as a green line centered on the
display and parallel with the Course Pointer. The scale is a set of four hollow, green dots
that are perpendicular to the Course Pointer (Figure 4-55).
Course Deviation Indicator
Course Deviation Scale
The ARC CDI Compass Mode’s CDI and Scale are located at the bottom of the lower
display. The indicator is a green diamond, and the Scale is a set of four hollow, white
dots with a white index mark at the center (Figure 4-57). When in the ARC CDI
Compass Mode, on a Localizer Back Course approach, a BC label is presented to the left
of the scale, and the Indicator corrects for reverse sensing (Figure 4-58).
When the lateral deviation exceeds the maximum displayable range of 2.5 dots,
the Deviation Indicator bar or diamond, as applicable, becomes hollow and darker
(Figure 4-56 and 4-59).
Figure 4-55
Deviation Indicator, 360° and ARC HSI Compass Modes
Figure 4-56
Exceeded Deviation, 360° and ARC HSI Compass Modes
Figure 4-57
Course Deviation Indicator, ARC CDI
Compass Mode
Figure 4-58
Course Deviation Indicator, ARC CDI
Compass Mode with Back Course
Figure 4-59
Deviation Exceeded, ARC CDI
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