Approach Notes

Approach Notes

Waypoints

TSO C129

Overlay

The database waypoints which describe the TSO C129a GPS approaches correspond with the waypoints which appear on the approach procedure charts whenever possible. VORs, NDBs, and named Intersections will appear in the approach sequence as they are on the charts. The Rifle, Colorado VOR will be identified RIL, the Turno Locator/Outer-Marker (LOM) at Salem, Oregon will be identified SL, the Forsyth NDB, at Forsyth Montana will be identified FOR, and the HIKOX intersection, used as an Initial Approach Fix (IAF) for VOR/DME or GPS RWY 3 approach at Casper Wyoming, will be identified as

HIKOX.

Many waypoints that are specific to TSO C129a GPS approaches require that a name be assigned to them, such as an Initial Approach Fix (IAF) which is shown on the approach procedure chart as a radial and distance from a VOR. These waypoints may or may not appear on the approach procedure charts. Jeppesen includes the names of many of these waypoints on their approach procedure charts; however, these names are usually not included on National Ocean Service (NOS) charts.

TSO C129 requires the equipment to prompt the pilot to enter the local altimeter setting, if not already entered, at 3 nm inbound to Final Approach Fix, FAF. It also requires that the equipment change RAIM alarm limits from 1 nm to 0.3 nm and to begin changing CDI sensitivity from 1 nm full-scale deflection to 0.3 nm full-scale deflection when 2 nm inbound to the FAF. The TSO also requires that the final leg of the approach be defined as a path between the FAF and the MAP waypoints (bearings to or from waypoints are not allowed for the final segment). For these reasons, a GPS TSO C129a approach must always have an FAF lying on the inbound course to the MAP, even when there is no such waypoint in the

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