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3-23
Rev 1
5.Turn the left inner knob to select either HRD SFTor to
select HRD. If HRD SFTis chosen, then both hard
and soft surface runways meeting the required runway
length will be included in the nearest airport list. If
HRDis chosen, then only hard surface runways will
be included. Hard surface runways include concrete,
asphalt, pavement, tarmac, brick, bitumen, and
sealed. Soft surface runways include turf, gravel, clay,
sand, dirt, ice, steel matting, shale, and snow.
For example, if the minimum runway criteria selected is
2200feet in length and HRDsurface, then only airports
having a hard surface runway at least 2200 feet in length
will be displayed in the nearest airport list.
NOTE: The capability to display nearest airports exists
only when the KLN 90B is actually operating in the pri-
mary database coverage area. For example, if the KLN
90B contains a North American database it will not dis-
play nearest airports while operating in Europe.
3.7.3.1 Nearest Airports In An Emergency
In the event of an emergency, a special procedure exists
to very quickly get to the beginning of the nearest airport
list:
1.Press M.
2.Press E. The waypoint page for the nearest airport
is now displayed on the right side. The right inner
knob may now be used in the normal manner to scan
the other nearest airports (knob in the “out” position)
or to view all eight airport pages for a specific airport
(knob in the “in” position). Figure 3-71 shows an
example of a nearest APT 1 page.