Справочник Пользователя для Garmin gns 500w

90

190-00356-00 Rev E

Missed Approach

pended at the MAP.  A “from” indication will 
be displayed on the CDI and default NAV page, 
but course guidance along the final approach 
course will continue. If a missed approach is 
required, use the OBS key to initiate the missed 
approach sequence. 

After you pass the MAP, if the runway isn’t in sight 

you must execute a missed approach. The 400W-series 
continues to give guidance along an extension of the final 
course segment (FAF to MAP) until you manually initiate 
the missed approach procedure (as mentioned previously 
in reference to the “SUSP” advisory). 

RW04

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NOTE: It is the pilot’s responsibility for initial 
missed approach guidance in accordance with 
published procedure. The unit may not provide 
correct guidance until established on a defined 
leg. 

The OBS key is used to initiate the missed approach, 

as follows: 

1.   After  commencing  the  published  missed 

approach  procedure,  and  after  the  SUSP 
annunciator has appeared, press the OBS key 
to sequence to the first waypoint in the missed 
approach procedure. This will simultaneously 
result in several changes: 

a.   SUSP annunciation will extinguish. 
b.   The first waypoint in the missed approach 

procedure will be sequenced. 

c.   The current approach annunciation (LPV, 

L/NAV, LNAV+V or LNAV) will be replaced 
with  either  MAPR  or TERM,  depending 
on the design of the approach. Normally, 
MAPR  will  be  annunciated  for  missed 
approach procedures in which the first leg 
is a climb straight ahead to a waypoint, 
whereas TERM  will  be  annunciated  for 
missed approach procedures requiring a 
turn. 

d.  CDI scaling will change to ±0.3 NM full 

scale deflection if MAPR is annunciated, 
or ±1.0 NM if TERM is annunciated. 

e. 

The “FROM” indicator will change to a 
“TO” indication. 

 

NOTE: In some cases, an additional hold way-
point is added to the missed approach sequence. 
This additional waypoint is used as an aid in 
establishing the holding pattern—  
especially where the MAP and MAHP are the 
same waypoint. 

2.   An alert message in the lower right hand corner 

of the screen will recommend entry procedures 
for the holding pattern (i.e., “HOLD DIRECT”, 
“HOLD PARALLEL”,  or “HOLD TEARDROP”).