Quantcast GPS Holding Procedures - P-340_wch40279

 

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T-34C INSTRUMENTS
CHAPTER SEVEN
depending on the type of holding that is depicted. If using GPS
Distance for leg lengths DO NOT confuse TACAN DME or VOR/
DME for GPS Distance.
2.
When you rotate the CDI to the desired inbound course, the
new course will be displayed as a line through the Holding Fix on
the KLN 900 screen.
e.
At the completion of the outbound leg timing or at a specified GPS distance, turn
towards the holding course to intercept the holding course inbound. (TAIL-RADIAL-
TURN)
NOTE
With the GPS in the OBS mode for holding, the double needle on
the RMI functions like a VOR needle. The holding fix is a
simulated NAVAID and theTail/Head of the needle will provide
simulated radial indications.
f.
Upon reaching the Holding Fix for the second time conduct No-Wind orbit.
g.
Roll out of the turn on the outbound heading to parallel the holding course. This heading
will be the same as the reciprocal of the holding course.
h.
At the completion of the outbound leg timing or GPS distance turn towards the
holding course. (TAIL-RADIAL-TURN)
i.
At wings level begin timing if required and determine the wind direction (TAIL-
RADIAL-WIND) and the number of degrees off the holding course. Set up intercept
for the holding course.
j.
Upon reaching the Holding Fix for the third time determine the following:
i.
Timing corrections if required. (Headwind/Tailwind)
ii.
Number of degrees to correct for the crosswind. For every degree off the
holding course use the same amount into the wind for a correction factor while
outbound. Use 1/3 of the correction factor while inbound to the Holding Fix.
k.
All following orbits will be correction orbits using the same procedures.
l.
Confirm expected further clearance time with approach control at least five minutes
prior to EFC.
m.
Follow approach control instructions once cleared out of holding.
13.
GPS ARCING
INSTRUMENT NAVIGATION 7-43


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