Holding - P-8710180

CHAPTER EIGHT

T-6A INSTRUMENT NAVIGATION

If the FAWP is not the Active WPT, the pilots must cycle back to

the FAWP and push "DIRECT TO" followed by "ENT."

Within the 2 NM gate, the KLN 900 verifies the aircraft's heading,

position and RAIM. If the parameters are met, the system

"activates" the approach and the CDI scale factor smoothly

changes to + 0.3 NM full deflection.

11. At the FAWP, conduct the 6 Ts and verify a green GPS annunciator.

12. Upon reaching the MAWP, if the runway is not in sight or the aircraft is not in a position to

make a safe landing, execute the MAP.

NOTE

The GPS system will not automatically sequence to any waypoints

required to execute the missed approach procedure. Automatic

sequencing will cease at the MAP. If a missed approach is

required, the pilot must manually sequence the system to the

MAWP. Press the "DIRECT TO" key followed by the "ENTER"

key; the default WPT will be the MAWP defined in the procedure.

HOLDING

Once cleared to a holding fix, use the "DIRECT TO" function of the GPS to highlight, select and

enter the holding fix as the active waypoint in the active flight plan (FPL 0). Ensure the system

is in LEG mode and proceed direct to the fix. The LEG mode provides the direct course routing

to the active waypoint from the aircraft's present position at the time the "DIRECT TO" function

was initiated.

Prior to arriving at the holding fix, select OBS mode and dial in the holding course. Once at the

holding fix, enter the holding pattern using normal entry procedures. Make sure the holding fix

is still the active waypoint. If not, select (from FPL 0) and re-enter the holding fix as the active

waypoint. Selection of OBS mode prior to arriving at the holding fix is necessary in order to

disable automatic waypoint sequencing. The selection of OBS mode also allows the aircrew to

dial in the holding course on the CDI. The holding course is best visible on the SuperNAV 5

page and it is recommended the holding pattern be conducted with this page displayed on the

GPS.

GPS HOLDING PROCEDURES

Ensure the holding fix is the active WPT.

Ensure LEG mode selected while proceeding enroute to the holding fix.

8-14 GLOBAL POSITIONING SYSTEM