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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
TUNING NAV RADIOS
The last three lines of the PROGRESS page 1, shown in Figure 6--70
of Procedure 6--13, are dedicated to the VOR and DME (NAV) radios.
The currently tuned frequencies and VOR identifiers for those radios
are displayed under the headings NAV 1 and NAV 2.
Tuning the NAV radios through the FMS is possible using the following
three different methods:
1. NAV page
2. Identifier
3. Frequency
FMS maintains a Candidates List of up to 25 local navaid stations
obtained from the NAV database. The Candidates List contains the
navaids (of type VOR/DME, VORTAC, noncolocated VOR/DME, DME,
or VOR) closest to the aircraft and within a maximum range of 320 NM
of the aircraft. (The term noncolocated VOR/DME also includes
noncolocated VORTACs. In addition, the term DME includes TACANs.)
The Candidates List is sorted such that the closest navaid to the aircraft
is first.
The FMS assists tuning by displaying the ten closest navaids from the
Candidates List to the aircraft position.
To tune a NAV radio to one of the listed navaids, follow the steps in
Procedure 6--13. While the example is for NAV 1, the procedure applies
to both NAV 1 and NAV 2.
Step Procedure 6- -13 NAV Tuning From Ten Closest Stations
1
Select PROG from the MCDU panel. When Page 1 is not
displayed, select NEXT until Page 1 is displayed.
2
Select the NAV 1 (6L) or NAV 2 (6R) prompt at the bottom
of the PROGRESS page, shown in Figure 6--70. In the
example, NAV 1 is selected.
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
Navigation
6-89
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