GPS Holding Procedures

T-6A INSTRUMENT NAVIGATION

CHAPTER EIGHT

3. Select OBS mode just prior to the holding fix and dial the CDI to the course that was given

in the LEG mode. This will give a direct course to the holding WPT.

4. Determine the direction for entry using standard holding or non-standard holding entry

procedures.

At the holding fix conduct 6 Ts. SRTs will be used while in holding.

NOTES

1. Timing or GPS distance may be used for leg lengths

depending on the type of holding 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 course, the new

course will be displayed as a line through the holding fix on the

KLN 900 screen.

6. 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 EHSI functions like a VOR needle. The holding fix is a

simulated NAVAID and the tail/head of the needle will provide

simulated radial indications.

7. Upon reaching the holding fix for the second time, conduct the no-wind orbit. 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.

8. 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)

9. 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.

10. Upon reaching the holding fix for the third time, determine the following:

Timing corrections if required (Headwind/Tailwind).

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 1/2 of the correction factor while inbound to the holding fix.

GLOBAL POSITIONING SYSTEM

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