Garmin G3X Pilot's Manual page 357

These are rare occurrences and are typically resolved within a few radar sweeps once
the client/intruder aircraft course stabilizes.
Pilots using TIS can provide valuable assistance in the correction of malfunctions by
reporting observations of undesirable performance. Reports should identify the time
of observation, location, type and identity of the aircraft, and describe the condition
observed. Reports should also include the type of transponder and transponder
software version. Since TIS performance is monitored by maintenance personnel, not
ATC, malfunctions should be reported in the following ways:
• By telephone to the nearest Flight Service Station (FSS) facility
• By FAA Form 8000-7, Safety Improvement Report (postage-paid card can be obtained
at FAA FSSs, General Aviation District Offices, Flight Standards District Offices, and
General Aviation Fixed Base Operators)
190-01115-00 Rev. G Garmin G3X Pilot's Guide
Appendix E
339