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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
VOR Tuning
VOR tuning is the default power--up mode.
When autotuning is active and VOR is selected as the navigation
source on EFIS, the letter V is displayed adjacent to the navaid
identifier. The V indicates that autotuning is selected, but is suspended
while VOR is displayed. When EFIS is switched back to FMS,
autotuning resumes. Remote tuning by the pilot is possible while V is
displayed. When this is done, the tuning mode changes to remote (R).
When VOR is selected with the EFIS preview display feature,
autotuning is disabled.
Remote Tuning
The tuning mode is remote when the pilot tunes the NAV radios through
the FMS or from the radio tune source. The FMS does not adjust pilot
selected frequencies. Radio tune sources are on the primary flight
display (PFD), RADIO page on the MCDU and the PROGRESS page.
Manual Tuning
When the manual tuning mode is active, the FMS can not tune the VOR
or associated DME channel. Tuning is done only by the pilot through the
radio tune source. The FMS still tunes the blind channels of the
scanning DME during this mode.
A28- - 1146- - 181
Navigation
REV 3 Mar 2009
6-95
Honeywell International Inc. Do not copy without express permission of Honeywell.
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