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, or by sending
an email to the ADS-B help desk at adsb@faa.gov. Reports should include:
1. Condition observed;
2. Date and time of observation;
3. Altitude and location of observation;
4. Type and call sign of the aircraft; and
5. Type and software version of avionics system.

Surveillance Systems

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