20GTN 750: ADDING DEPARTURES, ARRIVALS, AND APPROACHES
Fly an RF leg that is part of a published procedure
With GTN system soware 6.5 and later, you can y some procedures that include radius-to-x (RF) legs. e
AIM denes an RF leg as “a constant radius circular path around a dened turn center that terminates at a x.”
RF legs (which resemble DME arcs) were formerly included only in Authorization Required (AR) approach-
es with RNP in the procedure title. But RF legs are now being used as transitions or feeder routes in other
approaches, including RNAV and ILS approaches, such as the ILS Z or LOC Z RWY 16 at Reno/Tahoe Intl
(KRNO). Note that even with the GTN, you cannot y an Authorization Required (AR) approach with RNP
in the procedure title.
e following limitations, outlined in the AFM Supplement for the GTN, apply to ying procedures that
include RF legs:
• e aircra is limited to 180 KIAS while on the RF leg.
• RF legs are limited to RNP 1 procedures. (RNP AR and RNP <1 are not approved.) is means the GTN
must be in terminal mode while ying an RF leg (just as it is while ying any feeder route) and the lateral
tolerances for the RF leg are 1 NM (just as on a DME arc).
• Primary navigation guidance on RF legs must be shown on an electronic HSI (EHSI) with auto-slew ca-
pability active. You can’t y an RF leg if your aircra has only a mechanical HSI or any CDI that requires
you to manually select courses as you y the curved path.
• e GTN Map, EHSI Map, or distance-to-next-waypoint information must be displayed during the RF
leg when ying without the aid of an autopilot or ight director.
• e active waypoint must be displayed within the pilot’s primary eld of view.
For more information about ying RF legs with a GTN, see “6.9 Radius-to-Fix (RF) Approaches” in the
GTN 725/750 Pilot’s Guide.
When an RF leg is included in an approach, it is part of a transition or feeder route. Although you must
observe the limitations outlined above when ying an RF leg, no special techniques or procedures are required.
Load the procedure and transition as described in “Load an instrument approach” earlier in this manual.
TIP
When a procedure is part of the active flight plan, you
can proceed direct-to any waypoint in the procedure;
activate a leg of the procedure; or delete a waypoint,
hold, or course reversal in the procedure; just as you
can modify flight plan waypoints when flying enroute.
Note that when you proceed direct-to a waypoint or
activate a leg within a procedure, you effectively ac-
tivate that procedure.
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