Aspen Avionics Evolution EFD1000 PFD - 4.4.1. Lateral Deviation Indicator

CHAPTER 4, REFERENCE GUIDE
EFD1000 PFD Pilot’s Guide
Page 4-42 A-01-184-00 REV B
EFD1000 PFD Pilot’s Guide
EFD1000 PFD Pilot’s Guide
4.4.1. Lateral Deviation Indicator
The LDI automatically displays when:
The active navigation source is a GPS radio and the GPS is in approach •
mode and valid.
Or
The active navigation source is a VHF navigation radio and a valid LOC, •
LOC(BC), or ILS signal is received.
When the LOC(BC) mode is active, deviation indications (corrected for reverse sensing)
are displayed. The deviation shown on the LDI directly corresponds to the deviation
indicated on the CDI in the lower display. When the lateral deviation exceeds the
displayable range of 2.5 dots, the course deviation diamond becomes dim and hollow,
and is “parked” at the extreme edge of the LDI scale (Figure 4-94).
When the LDI navigation source is invalid or is no longer available, the LDI course
deviation indicator symbol is removed from view and the navigation source legend is
slashed by a red horizontal line (Figure 4-95).
Figure 4-94
Lateral Deviation Indicator Exceed
Figure 4-95 LDI
Source Invalid