User Guide

Table Of Contents
AV8OR Ace User’s Guide Aviation Mode Operation
Weather Function
Pub. No D200904000003 Page 3-142 Rev 1 Jul 2009
© Honeywell International Inc. Do not copy without express permission of
Honeywell.
Figure 3-149: Text SIGMETs
A SIGMET) is an advisory of non-convective weather that is
potentially hazardous to all aircraft. SIGMETs address details
regarding severe icing not associated with thunderstorms, severe or
extreme turbulence not associated with thunderstorms, dust or sand
storms lowering visibility to less than 3 miles, volcanic ash. SIGMETs
are considered widespread because they must either be affecting or
forecast to affect an area at least 3,000 square miles. However,
during the forecast period, the actual affected area may be much
smaller. SIGMETs are issued as needed and the maximum forecast
period is 4 hours, except for 6 hours for conditions associated with
hurricanes.
A SIGMET contains elements in the following order:
Forecast Area
Report Type
Date and time issued
Report designation and reason for issuance
Validity period
Area of coverage
Location of weather phenomenon
Weather phenomenon details.
Text Conv-SIGMETs (USA only)
Tap on the CHOOSE PRODUCT soft key on the Weather Main page
and select Text Conv-SIGMETs from the SELECT WX PRODUCT
box.