Section 3. Telephone Information Briefing Service (TIBS) for Automated Flight
Service Stations (FSS)
a. TIBS provides a continuous telephone
recording of meteorological and/or aeronautical
1. TIBS must contain:
(a) Area and/or route briefings.
(b) Airspace procedures, if applicable.
(c) Special announcements, if applicable.
2. TIBS should also contain, but not be limited
(a) Surface observations (METAR).
(b) Terminal forecasts (TAF).
(c) Winds/temperatures aloft forecasts.
User needs should dictate the content of these recordings.
b. Each FSS sector/flight plan area must provide
at least four route and/or area weather briefings. As
a minimum, area briefings should encompass a 50
NM radius. Each briefing should require the pilot to
access no more than two channels which must be
route and/or area specific.
c. Separate channels must be designated for each
route area, local meteorological/aeronautical
information, special event, airspace procedures, etc.
11 Northeast Michigan
12 Southeast Michigan
13 Southwest Michigan
14 Northwest Michigan including the Upper Peninsula
19 Aviation Events
2-3-2. AREA/ROUTE BRIEFING
Service is provided 24 hours a day, but may be
reduced in accordance with paragraph 2-1-3.
Recorded information must be updated as conditions
a. Introduction. State the preparation time and
the route and/or the area of coverage. The service area
may be configured to meet the individual facility's
needs; for example, 50 NM radius, route oriented.
For the purpose of TIBS broadcasts, an area briefing may
be a geographic location not defined by a nautical mile
radius, for example, NORTHWEST NEBRASKA.
THIS RECORDING PREPARED AT (time) LOCAL or
(time) ZULU. BRIEFING SUMMARY FOR: A (number of
miles) NAUTICAL MILE RADIUS OF (location),
or (location not defined by nautical mile radius),
or THE ROUTE FROM (location) TO (location).
b. Weather Advisories. Include WST, WS, WA,
CWA, AWW, urgent PIREP (UUA), and any other
available meteorological information that may
adversely affect flight in the route/area.
WEATHER ADVISORIES ARE IN EFFECT FOR
(adverse conditions) OVER (geographic area) (text).
c. VFR Not Recommended (VNR) Statement.
Include this recommendation when current or
forecast conditions, surface or aloft, would make
flight under visual flight rules doubtful.
V-F-R FLIGHT NOT RECOMMENDED (location) DUE
d. Synopsis. A brief statement describing the
type, location, and movement of weather systems
and/or masses which might affect the route or the
area. This element may be combined with adverse
conditions and/or the VNR element, in any order,
when it will help to more clearly describe conditions.
e. Current Conditions. Include current weather
conditions over the route/area and PIREPs on
conditions reported aloft.
When communicating weather information on the TIBS
broadcast or telephone, specialists may announce cloud
heights in either group form or in hundreds or thousands
of feet, such as, “seventeenthousand” or “oneseventhousand.”
f. Density Altitude. Include the statement “Check
Density Altitude” as part of the surface weather
broadcast for any weather reporting point with a field
elevation of 2,000 feet MSL or above that reaches the
criteria found in TBL 2-2-1.
g. En Route Forecast. Include forecast information from appropriate data; for example, area forecast
(FA) synopsis, terminal aerodrome forecast (TAFs),
and weather advisories.
h. Winds Aloft. Include winds aloft as forecast for
the route/area as interpolated from forecast data for
the local and/or the adjacent reporting locations for
levels through 12,000 feet. The broadcast should
include the levels from 3,000 to 12,000 feet, but must
always include at least two forecast levels above the
i. Request for PIREPs. When weather conditions
within the area or along the route meet requirements
for soliciting PIREPs (paragraph 925), include a
request in the recording.
PILOT WEATHER REPORTS ARE REQUESTED.
CONTACT FLIGHT WATCH or FLIGHT SERVICE, as
j. Closing Announcement. The closing
announcement must provide instructions for
contacting a pilot briefer for NOTAMs, military
training activity, or other information.
a. Manually prepared recordings must be
monitored immediately after recording to insure
accuracy of data and availability by calling
b. Automated TIBS products and
nonmeteorological recordings must be monitored
once each shift to ensure clarity and accuracy.