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Approach Procedures
Holding Patterns
A holding pattern is operationally the same as a procedure turn except
that you usually intend to make repeated crossings of the waypoint on a
specific inbound course. For a holding pattern, like for the procedure
turn, the steps will always be to:
1.
2.
D
ENT
3.
While you are in a holding pattern, the CDI/HSI cross-track deviation
display and the TO/FROM flag will behave almost exactly the way
they would if you were holding at a VOR. The TO/FROM flag will
display "TO" prior to reaching the waypoint. The TO/FROM flag will
display "FROM" after crossing the waypoint. TO and FROM is
determined by position relative to a line drawn perpendicular to the
selected inbound course and through the waypoint. The CDI will
indicate "fly-left" if the aircraft is to the right of the desired track with
reference to the selected inbound course. The CDI will indicate
"fly-right" if the aircraft is to the left of the desired track with reference
to the selected inbound course. As with traditional VOR navigation,
these indications are always related to the aircraft position and not to
the heading or direction of flight.
246
First, verify that sequencing is
suspended, the OBS/HLD annunciator
is lit, or suspend sequencing by
pressing the OBS/HLD button.
Second, after crossing the waypoint,
D
establish the desired inbound course to
the waypoint by pressing DIRECT-TO
twice or pressing ENT for the "Set
OBS Course" message. Select the
inbound course with the Small and
Large knobs, then press ENT.
Enter the holding pattern by the most
appropriate entry method. For example,
Direct, Teardrop, or Parallel, just as
you would enter that holding pattern at
a VOR. Finally, when you are ready to
exit the holding pattern, press
OBS/HLD while still on the "To" side
of the waypoint to enable sequencing
the next time you cross the waypoint.
Operations
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