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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
To tune a NAV radio by frequency, follow the steps in Procedure 6--15.
Step Procedure 6- -15 NAV Tuning by Frequency
1
Select PROG from the MCDU panel. When Page 1 is not
displayed, select NEXT until Page 1 is displayed.
2
Enter the frequency into the scratchpad.
3
Push the line select key 5L or 5R.
4
The FMS tunes the radio to the entered frequency and
searches the Candidates List of local navaids. When no
match is found, the FMS searches the navaids listed in the
flight plan (e.g., ILS). The frequency and identifier of the
first matching navaid is displayed on the PROGRESS page.
When no matches are identified, the identifier field remains
dashed.
The FMS does not use ILS LOC/GS data for position computations.
When a DME is associated with an ILS, the FMS can use DME in
position computation.
The small letter in front of the navaid identifier in the lower part of the
PROGRESS page indicate the tuning mode for the NAV radios (VOR
and DME). The tuning modes are as follows:
A (autotune)
D
V (VOR displayed as navigation source, autotune suspended or
D
preview mode selected)
R (remote tune)
D
M (manual tune).
D
Regardless of the tuning mode, the FMS constantly tunes the scanning
channels of the DME (when available) for position update.
Navigation
6-92
Honeywell International Inc. Do not copy without express permission of Honeywell.
A28- - 1146- - 181
REV 3 Mar 2009
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