Avidyne IFD540 Manual de Instalação descarregar pdf (Página 172)

5-14 Navigation

NOTE

Displayed Inbound Course

Due to mathematical rounding, it is possible that

course being sent to an EFIS for digital display may

be 1 degree off from the published approach chart.

PRECISION APPROACHES

On ILS/LOC approaches with a Vectors-to-Final transition, the

IFD will automatically toggle the nav mode to VLOC on

intercepting the localizer. Lateral and vertical deviation data will

be transmitted by the IFD for use by any integrated autopilot and

external indicators. Conversely, the IFD will toggle the nav source

from VLOC back to GPS when going missed at the Missed

Approach Point.

Precision WAAS approaches are flown with the nav source knob

set to GPS.

NON-PRECISION APPROACHES

As with the case in precision approaches, as long as the

published approach is entered into the FMS as part of the active

flight plan, the inbound course and all switching between GPS

and VLOC (if appropriate) is done automatically.

DME arc legs and approaches are supported by the system.

TIPS AND TECHNIQUES

CDI Deflection During VOR Approaches

When VOR and GPS inbound courses are not co-

aligned, a large CDI deflection may occur when the

Nav Source transitions from GPS to VLOC.

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Avidyne IFD540 Manual de Instalação Página 172