Garmin G1000 Series, Pilot'S Manual

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Garmin G1000 Pilot’s Guide for the Diamond DA40
190-00592-00 Rev. A 8-18
OPTIONAL EQUIPMENT
SIG/AIR – Press to show SIGMET and AIRMET
information to advise the pilot of potentially
hazardous weather. The advisory covers an area
of at least 3,000 square miles at any one time. The
update rate is every 12 minutes.
NOTE:
SIGMETs are broadcast for hazardous
weather that is considered of extreme importance
to all aircraft. SIGMETs (acronym for “SIGnificant
METeorological information”) warn of the fol-
lowing weather hazards: severe icing, severe and
extreme turbulence, dust storms, sandstorms, or
volcanic ash lowering visibility to less than 3
miles. A Convective SIGMET (WST) is issued for
hazardous convective weather (such as torna-
does, thunderstorms, hail) and covers severe or
great turbulence, severe icing, and low-level wind
shear. A localized SIGMET is a significant weather
condition occurring at a localized geographical
position.
NOTE: AIRMETs are broadcast for weather
phenomena that potentially affects all aircraft.
For pilots of light aircraft, AIRMET (acronym for
“AIRman’s METeorological information) gives
valuable information about the following con-
ditions: moderate icing, moderate turbulence,
sustained winds 30 knots or greater at the sur-
face, widespread area with a ceiling of less than
1,000 feet and/or visibility less than 3 miles and
extensive obscurement of mountains. These are
important to light aircraft, as they have limited
flight capabilities due to lack of equipment and/or
instrumentation.
When enabled, the following AIRMETs can be
displayed:
•
Icing
•
Turbulence
•
IFR conditions
•
Mountain obscuration
•
Surface winds
Refer to the legend for a description of the color cod-
ing.
METAR – Press to display METARs (METeorological
Aviation Reports). METARS are shown as colored
flags at airports providing METAR reports. Refer
to the legend for a description of the color code.
The update rate is every 12 minutes.