Garmin GDU 37X Pilot's Manual page 151

TEMPORARY FLIGHT RESTRICTIONS (TFR)
CAUTION: The Graphical Depiction of TFR data is approximated.
NOTE: Do not rely solely upon data link services to provide Temporary Flight
Restriction TFR information. Always confirm TFR information through official
sources such as Flight Service Stations of Air Traffic Control.
Temporary Flight Restrictions, or TFRs, temporarily restrict all aircraft from entering
the selected airspace unless a waiver has been issued. TFRs are routinely issued for
activities such as sporting events, dignitary visits, military depots, and forest fires. TFRs
are represented as an area highlighted by red (active) or yellow (not yet active).
PIREPS
Pilot Weather Reports (PIREPs) provide timely weather information for a particular
route of flight. When significant weather conditions are reported or forecast, Air Traffic
Control (ATC) facilities are required to solicit PIREPs. A PIREP may contain unforecast
adverse weather conditions, such as low in-flight visibility, icing conditions, wind shear,
and turbulence. PIREPs are issued as either Routine (UA) (blue) or Urgent (UUA)
(yellow).
190-01054-00 Rev. E
TFR Data
Garmin GDU 37X Pilot's Guide
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Hazard Avoidance
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