Garmin GTN 650Xi Series Pilot's Manual page 158

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NEAREST AIRPORT GLIDE INDICATIONS
Airports with the "Glide" designation are within line-of-sight of the aircraft and
reachable on glide.
Best Glide
Airports
Surface type and runway length indications on
GTN 650Xi.
Specify nearest airport runway criteria in the System Setup app. For more about
these settings, read Nearest Airport Runway Criteria in section 2.
3-16
An icon denotes which airports are reachable on
glide. Select the identifier to view airport
information, including available runways.
Any airports within glide range
that do not meet the pilot-specified
nearest airport runway criteria may
also appear in the list. GTN Xi
highlights the offending criteria
setting (runway length or surface
type) in the APPR/RWY column.
A message appears at the top
of the list when no airports are
within glide range.
Pilot's Guide
The calculated
best glide airports
appear at the top
of the list.
190-02327-03 Rev. C