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6/17/21 

AIM 

ture; service environment; product lifecycles; modes 
of operation; and indications of system failure. 

NOTE

 

The NOTAM

D and NOTAM

FDC products broadcast via 

FIS

B are limited to those issued or effective within the 

past 30 days. Except for TFRs, NOTAMs older than 30 days 
are not provided. The pilot in command is responsible for 
reviewing all necessary information prior to flight. 

4. 

FIS

B products are updated and transmitted 

at specific intervals based primarily on product 
issuance criteria. Update intervals are defined as the 
rate at which the product data is available from the 
source for transmission. Transmission intervals are 
defined as the amount of time within which a new or 
updated product transmission must be completed 
and/or the rate or repetition interval at which the 
product is rebroadcast. Update and transmission 
intervals for each product are provided in 
TBL 7

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1. 

5. 

Where applicable, FIS

B products include a 

look

ahead range expressed in nautical miles (NM) 

for three service domains: Airport Surface; Terminal 
Airspace; and En Route/Gulf of Mexico (GOMEX). 
TBL 7

1

2  provides service domain availability and 

look

ahead ranging for each FIS

B product. 

6. 

Prior to using this capability, users should 

familiarize themselves with the operation of FIS

avionics by referencing the applicable User’s Guides. 
Guidance concerning the interpretation of informa-
tion displayed should be obtained from the 
appropriate avionics manufacturer. 

7. 

FIS

B malfunctions not attributed to aircraft 

system failures or covered by active NOTAM should 
be reported by radio or telephone to the nearest FSS 
facility, or by sending an email to the ADS

B help 

desk at adsb@faa.gov. Reports should include: 

(a) 

Condition observed; 

(b) 

Date and time of observation; 

(c) 

Altitude and location of observation; 

(d) 

Type and call sign of the aircraft; and 

(e) 

Type and software version of avionics 

system. 

f. 

Non

FAA FIS Systems. Several commercial 

vendors also provide customers with FIS data over 
both the aeronautical spectrum and on other 
frequencies using a variety of data link protocols. In 
some cases, the vendors provide only the communi-
cations system that carries customer messages, such 
as the Aircraft Communications Addressing and 
Reporting System (ACARS) used by many air carrier 
and other operators. 

1. 

Operators using non

FAA FIS data for 

inflight weather and other operational information 
should ensure that the products used conform to 
FAA/NWS standards. Specifically, aviation weather 
and NAS status information should meet the 
following criteria: 

(a) 

The products should be either FAA/NWS 

“accepted” aviation weather reports or products, or 
based on FAA/NWS accepted aviation weather 
reports or products. If products are used which do not 
meet this criteria, they should be so identified. The 
operator must determine the applicability of such 
products to their particular flight operations. 

(b) 

In the case of a weather product which is 

the result of the application of a process which alters 
the form, function or content of the base FAA/NWS 
accepted weather product(s), that process, and any 
limitations to the application of the resultant product, 
should be described in the vendor’s user guidance 
material. An example would be a NEXRAD radar 
composite/mosaic map, which has been modified by 
changing the scaling resolution. The methodology of 
assigning reflectivity values to the resultant image 
components should be described in the vendor’s 
guidance material to ensure that the user can 
accurately interpret the displayed data. 

Meteorology 

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