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AIM

10/12/17

4

−5−20

Surveillance Systems

b. Weather Products.

FIS-B does not replace a preflight weather briefing
from a source listed in Paragraph 7

−1−2, FAA

Weather Services, or inflight updates from an FSS or
ATC. FIS-B information may be used by the pilot for
the safe conduct of flight and aircraft movement;
however, the information should not be the only
source of weather or aeronautical information. A
pilot should be particularly alert and understand the
limitations and quality assurance issues associated
with individual products. This includes graphical
representation of next generation weather radar
(NEXRAD) imagery and Notices to Airmen
(NOTAM)/temporary flight restrictions (TFR).

REFERENCE

AIM, Paragraph 7

−1−11 , Flight Information Services

Advisory Circular (AC) 00

−63, “Use of Cockpit Displays of Digital

Weather and Aeronautical Information”

c. Reports of FIS

−B Malfunctions.

Users of FIS

−B can provide valuable assistance in the

correction of malfunctions by reporting instances of
undesirable system performance. Since FIS

−B

performance is monitored by maintenance personnel
rather than ATC, report malfunctions to the nearest
Flight Service Station (FSS) facility by radio or
telephone. Reporters should identify:

1.

Condition observed.

2.

Date and time of observation.

3.

Altitude and location of observation.

4.

Type and call sign of the aircraft.

5.

Type and software version of avionics

system.

TBL 4

−5−3

FIS

−B Basic Product Update and Transmission Intervals

Product

FIS

−B Service

Update Interval

1

FIS

−B Service

Transmission Interval

2

AIRMET

As available

5 minutes

Convective SIGMET

As available

5 minutes

METAR/SPECI

Hourly/as available

5 minutes

NEXRAD Reflectivity (CONUS)

5 minutes

15 minutes

NEXRAD Reflectivity (Regional)

5 minutes

2.5 minutes

NOTAM

−D/FDC

As available

10 minutes

PIREP

As available

10 minutes

SIGMET

As available

5 minutes

SUA Status

As available

10 minutes

TAF/AMEND

8 hours/as available

10 minutes

Temperature Aloft

6 hours

10 minutes

Winds Aloft

6 hours

10 minutes

1

 The Update Interval is the rate at which the product data is available from the source.

2

 The Transmission Interval is the amount of time within which a new or updated product transmission must be

completed and the rate or repetition interval at which the product is rebroadcast.

NOTE

Details concerning the content, format, and symbols of the various data link products provided should be obtained from
the specific avionics manufacturer.