Avidyne IFD540 Manual de instalación descargar pdf (Pagina 171)

5-13 Navigation

APPROACH PROCEDURES

Ensure the approach has been entered into the FMS flight plan,

and that it is currently active in the IFD.

Automatic mode switching (e.g. GPS  VLOC transition)

including automatically setting the inbound course, will occur if

the capture criteria defined above are met and the primary nav

frequency can be auto-identified. If auto tuning has not been

enabled on the setup pages, or a station cannot be identified,

automatic mode switching will not occur.

TIPS AND TECHNIQUES

Exception to Automatic Nav Mode Switching

If VLOC mode had been previously manually

selected to be the nav mode (e.g. cross-tuning a

VOR) and then an approach is activated in the flight

plan that would have normally resulted in a GPS 

VLOC nav mode indication, the nav mode will NOT

toggle to GPS  VLOC. Instead, it will stay at

VLOC since it is assumed the pilot intended to keep

using the previous function. Likewise, the

approach nav frequency will be inserted into the #1

standby nav frequency slot but not the active nav

frequency position. Both the nav mode transition

and the swapping of the nav frequencies will have to

be manually performed by the pilot.

With the proper inbound course set, including on localizer or ILS

approaches where the course pointer is just for reference, the

course and glide slope deviation data will be transmitted as

appropriate from the IFD for display on compatible cockpit third-

party devices such as CDIs, HSIs, EFISs, etc. In the

ILS/Localizer case, the CDI deflection will be driven by the

localizer signal itself, regardless of the course setting.

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Avidyne IFD540 Manual de instalación Pagina 171