a report of meteorological conditions in flight. - answer A PIREP
A piper is reported why - answer Since a meteorological phenomenon may not be
observable by any other means, pilots can report actual weather conditions as they are
encountered by the aircraft in flight.
There are two classifications of PIREPs: - answer Urgent(UUA)
Routine(UA)
Urgent weather reports conditions - answer Tornadoes, funnel clouds, water spouts,
sever or extreme turbulence, severe icing, Hail, LLWS, Volcanic eruptions and ash, Any
other hazardous weather
Air Traffic Control Tower (ATCT) use pirers for: - answer expedite flow of traffic in the
vicinity of the airport
provide hazardous weather avoidance procedures
FSSs use PIREPS from en route aircraft to: - answer brief pilots, issue in-flight
advisories, issue weather avoidance info
ARTCCs use the reports within the center's area to: - answer expedite the flow of en
route traffic, determine most favorable altitudes, issue hazardous weather information
NWS uses PIREPs to: - answer verify or armed conditions contained in forecast and
advisories
pilot weather briefings
study metorligical phenomena
All ATC facilities and NWS: - answer Forward pireps into the weather distribution
system
make pirep information available to pilots and other interested parties
Air traffic facilities are required to solicit PIREPs when: - answer ceiling below or at
5,000 ft, visibility 5sm or below, thunderstorms, convection weather, tornadoes, volcanic
ash nd other volcanic, when breaking is action advisory are in effect, icing, wind shear,
turbulence