I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 129
FOR SIMULATION USE ONLY – NOT A TRAINING AID
NAV TUNE - Radio Navigation Aid Tuning
The NAV TUNE hard key allows pilots to view information about their radio
navigation aids and transponder. The first press of the NAV TUNE key displays the
NAV TUNE page for the last viewed device, and each subsequent press cycles
through the devices NAV, DME, and XPDR.
NAV TUNE - VOR/LOC
The NAV TUNE page for the NAV navaid allows pilots to view and change the preset
and or frequency of the VHF navaid.
Key Window Action
NAV TUNE –
VOR/LOC
VOR or LOC
W1 - Displays as one of VOR (if NAV is a VOR/ILS
tuned to a VOR frequency), LOC (if NAV is a
VOR/ILS tuned to a localizer frequency).
If the tuned frequency is part of the preset
frequency library the corresponding preset (01 to
20) number is shown. If the frequency has no
associated number, ## is shown.
Changing the preset number in this window using
the alphanumeric keyboard and ENT buttons
automatically retunes NAV to the frequency or
channel corresponding to that preset.
IDENT or
###
W2 - Displays the station IDENT from the FMS
database.
If no match to frequency is found, ### is found.
VOR or LOC
Frequency
W3 - If NAV is manually tuned in this window to a
frequency or channel corresponding to a preset.
The preset number is automatically displayed in
W1.
If NAV is tuned to a frequency or channel that does
not correspond to a preset, the characters ##
displays in place of the preset number in W1.
W4 - Has no display or control functionality.
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