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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
Approach (APP) -- APP is an advisory annunciator. The
D
annunciator indicates the FMS is in the approach mode of operation.
In this mode, the EDS deviation sensitivity and FMS tracking gains
are increased. The approach annunciator is displayed when ALL the
following conditions are valid:
— The FMS is the selected aircraft navigation source on EDS.
— A nonprecision instrument approach has been activated from the
navigation database. When no approach, or an instrument
landing system (ILS), localizer (LOC), LOC--BC, landing
directional aid (LDA), simplified directional facility (SDF), or
microwave landing system (MLS) approach is selected, the APP
annunciator does not light.
— The aircraft position is between 2 NM outside the final approach
fix (FAF) and the missed approach point (MAP).
— The DGR annunciator must be removed or turned off.
— The FMS must be using approved sensors for the selected
approach procedure. Approved sensors for nonprecision
approach procedures are listed in Table 3--3.
Approach
A
h
Procedure
GPS/RNAV
VOR DME
VOR
NDB
NOTE:
A VOR without DME is only flown by the FMS when GPS or DME/DME
is available.
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
Table 3- -3
Approved Sensors for Approach
GPS
X
X
X
X
Approved Sensors
(Navigation Mode)
DME/DME
X
X
X
VOR/DME
X
X
(see note)
System Components
3-27
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