General Procedure for GPS Non Precision Approaches -Cont.

CHAPTER SEVEN

T-34C INSTRUMENTS

pressed when the GPS is in approach active mode, the GPS will deselect approach active and

return the system to approach arm mode and CDI scale to +1 NM. Once past the FAF, it is not

possible to return to the approach active mode without conducting a missed approach and flying

back to the FAF.

WARNINGS

In no case will pilots fly the final approach segment using

manual waypoint sequencing.

Use of the KLN900 may cause excessive "Heads-down" time.

Aircrews must continue to maintain a vigilant "See and Avoid"

doctrine while conducting GPS approaches in VMC.

On final, the CDI is the primary reference. The GPS needle

points to the active waypoint and will rotate as the aircraft passes

the waypoint.

If the receiver does not sequence into the approach mode or a RAIM failure/status annunciation

occurs prior to the FAWP, the pilot should not descend to Minimum Descent Altitude (MDA), but

should proceed to the MAWP via the FAWP, perform a missed approach, and contact ATC as

soon as practical. If the RAIM flag/status annunciation appears after the FAWP, the missed

approach should be executed immediately by climbing to the FAF altitude and flying along the

final approach course to the MAWP and conduct the published missed approach procedure.

Turns should not begin prior to the MAWP.

WARNING

The "PRESS GPS APR FOR NAV" message can appear after the

NAV flag has been set due to a RAIM problem while the unit is in

the approach mode. By pressing the GPS APR button, the unit will

be able to restore navigation information so that you can conduct a

missed approach based on navigation information provided by

KLN900, otherwise you will receive no useful information from

the KLN900.

Once an approach has been added to the active flight plan, a new entry is placed following the

missed approach point. The new line entry reads "NO WPT SEQ" and stands for no waypoint

sequencing. Because many missed approach procedures require certain specific actions to be

completed prior to proceeding to the missed approach holding point, the GPS will not

automatically sequence past the MAP. To call up the missed approach procedure, press the

"Direct To" button once past the MAP. The first waypoint in the missed approach procedure will

be the active waypoint. To confirm the missed approach procedure waypoint, press "ENT".

Always refer to the approach plate when conducting the missed approach and comply with the

charted missed approach procedures. Missed approach routings in which the first track is via a

course rather than direct to the next waypoint require additional action by the pilot to set the

course. Being familiar with all of the inputs required is especially critical during this phase of

7-36 INSTRUMENT NAVIGATION