Garmin APOLLO GX65 - Manual (Page 268)

such waypoint in the underlying approach. There are
many GPS overlay approaches, such as the VOR or
GPS-B approach to Wenatchee Washington, where
there is no FAF inbound. The EAT VOR is the Initial
Approach Fix (IAF), Final Approach Fix (FAF),
Missed Approach Point (MAP), and Missed Approach
Holding Point (MAHP). When there is no FAF
inbound waypoint for a GPS approach, it is necessary
to add one so that the equipment can do these TSO
required tasks. This equipment-required FAF is
called a sensor FAF and it is always located on the
final approach course prior to the MAP. If there is
already a named waypoint which can be used, it
becomes the sensor FAF. If not, a sensor FAF
waypoint is created. In the Wenatchee approach
example, this waypoint is named FF285. FF285 is the
sensor FAF and the inbound course for the approach
is 285°. FF285 appears on the Jeppesen approach
procedure chart, but not on the National Ocean
Service (NOS) approach procedure chart for this
approach.
This is especially important to understand when a
procedure turn or course reversal is required. If you
are inbound from the CASHS intersection, a
procedure turn is required. You must execute this
procedure turn on your Apollo GX relative to FF285,
the TSO-C129a/JTSO-C129a FAF, not relative to the
EAT VOR as depicted on the NOS chart as it is
necessary to cross this sensor FAF waypoint inbound
in order for the Apollo GX to go approach active
(approach active annunciator lit) and allow you to
complete the approach. This is clearly depicted on the
Jeppesen approach procedure chart.
9-78
Approach Notes