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not limited to, the type of weather product (e.g.,
current weather or forecast weather), the currency of
the product (i.e., product issue and valid times), and
the relevance of the product. Pilots and operators
should be cautious when using unfamiliar products,
or products not supported by FAA/NWS technical
specifications.
NOTE−
When in doubt, consult with a FAA Flight Service Station
Specialist.
j. As a point of clarification, Advisory Circular
00−62, Internet Communications of Aviation
Weather and NOTAMS, describes the process for a
weather information provider to become a Qualified
Internet Communications Provider (QICP) and only
applies to 14 CFR Part 121 and Part 135 certificate
holders. Therefore, pilots conducting operations
under 14 CFR Part 91 may access weather products
via DUATS and the public Internet.
7−1−4. Preflight Briefing
a. Flight Service Stations (AFSSs/FSSs) are the
primary source for obtaining preflight briefings and
inflight weather information. Flight Service Specialists
are qualified and certificated by the NWS as Pilot
Weather Briefers. They are not authorized to make
original forecasts, but are authorized to translate and
interpret available forecasts and reports directly into
terms describing the weather conditions which you
can expect along your flight route and at your
destination. Available aviation weather reports,
forecasts and aviation weather charts are displayed at
each AFSS/FSS, for pilot use. Pilots should feel free
to use these self briefing displays where available, or
to ask for a briefing or assistance from the specialist
on duty. Three basic types of preflight briefings are
available to serve your specific needs. These are:
Standard Briefing, Abbreviated Briefing, and
Outlook Briefing. You should specify to the briefer
the type of briefing you want, along with your
appropriate background information. This will
enable the briefer to tailor the information to your
intended flight. The following paragraphs describe
the types of briefings available and the information
provided in each briefing.
REFERENCE−
AIM, Preflight Preparation, Paragraph 5−1−1, for items that are
required.
b. Standard Briefing. You should request a
Standard Briefing any time you are planning a flight
and you have not received a previous briefing or have
not received preliminary information through mass
dissemination media; e.g., TIBS, TWEB, etc.
International data may be inaccurate or incomplete.
If you are planning a flight outside of U.S. controlled
airspace, the briefer will advise you to check data as
soon as practical after entering foreign airspace,
unless you advise that you have the international
cautionary advisory. The briefer will automatically
provide the following information in the sequence
listed, except as noted, when it is applicable to your
proposed flight.
1. Adverse Conditions. Significant meteorological
and aeronautical information that might
influence the pilot to alter the proposed flight; e.g.,
hazardous weather conditions, airport closures, air
traffic delays, etc.
AIM 2/17/05
7−1−6 Meteorology
2. VFR Flight Not Recommended. When
VFR flight is proposed and sky conditions or
visibilities are present or forecast, surface or aloft,
that in the briefer’s judgment would make flight
under visual flight rules doubtful, the briefer will
describe the conditions, affected locations, and use
the phrase “VFR flight not recommended.” This
recommendation is advisory in nature. The final
decision as to whether the flight can be conducted
safely rests solely with the pilot.
3. Synopsis. A brief statement describing the
type, location and movement of weather systems
and/or air masses which might affect the proposed
flight.
NOTE−
These first 3 elements of a briefing may be combined in any
order when the briefer believes it will help to more clearly
describe conditions.
4. Current Conditions. Reported weather
conditions applicable to the flight will be summarized
from all available sources; e.g., METARs/SPECIs,
PIREPs, RAREPs. This element will be omitted if the
proposed time of departure is beyond 2 hours, unless
the information is specifically requested by the pilot.
5. En Route Forecast. Forecast en route
conditions for the proposed route are summarized in
logical order; i.e., departure/climbout, en route, and
descent. (Heights are MSL, unless the contractions
“AGL” or “CIG” are denoted indicating that heights
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