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GNS 530(A) Pilot’s Guide and Reference
190-00181-00 Rev. E
SECTION 6
PROCEDURES
6-9
The OBS Key is used to initiate the missed approach,
as follows (refer to Figure 6-22 for the following steps):
1) Press the OBS Key. The missed approach
holding point (MAHP; in this case ‘SWARM’
intersection) is automatically offered as the
destination waypoint.
NOTE: In some cases, an additional hold
waypoint 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) Follow the missed approach procedures, as
published on the approach plate, for proper
climb and heading instructions. The GNS 530
guides the pilot to the holding pattern, along
the 053° radial from LYH VOR.
3) An alert message in the lower right-hand corner
of the screen recommends entry procedures for
the holding pattern (i.e., ‘HOLD DIRECT’, ‘HOLD
PARALLEL’, or ‘HOLD TEARDROP’, see Figure
6-23). When flying the holding pattern, a timer
appears on the Default NAV Page. The timer
automatically resets on the outbound side of
the hold when the aircraft is abeam the hold
waypoint. The timer again resets as the aircraft
turns inbound (within approximately 30° of the
inbound course). This allows the pilot to use
standard timing (typically one minute) to fly
the inbound and outbound legs of the hold.
Figure 6-23 ‘Hold Teardrop’ Annunciation
4) The GNS 530 provides course guidance only
on the inbound side of the holding pattern.
When leaving the holding pattern to re-fly
the approach (or another approach) press the
PROC Key to ‘Select Approach?’ or ‘Activate
Approach?’ as previously described. (Or,
use the Direct-to Key to select another
destination.)