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TIS-B "No Service"
Good Morning Fellow RV'ers,
After extensive troubleshooting, and some creepy-stalker behavior, I think have uncovered a failure of the TIS-B service in the Waco/Austin TX area. Background: My RV-7 is Dual G3X Touch, GTN-650, GTX-345 equipped, and configured correctly for ADS-B Out (PAPR report shows passing parameters for Link Version, NIC, NACp, NACv, SIL, SDA, etc.). Recently, I would see the TIS-B Icon indicate a failure while Air-To-Air remained steady, and certain traffic on the G3X display would disappear... Details: On my flights originating/terminating from KGTU, TIS-B shows "No Service" and Air-to-Air operating normally. Longer flights out of the area (to KDWH, KLBB, KMDD) show TIS-B Client availability for the percentage of the flight outside of the Austin area. I randomly sampled various N-Numbers observed on my ADS-B receiver, and each flight shows a similar result, Air-to-Air operating and TIS-B Client is 0%. From the forum, I see that Asheville, NC and Savannah, GA areas are having or have had similar problems and that the FAA recognized that there were equipment problems in Savannah earlier this year. I have sent emails to adsb@faa.gov with the details & data. If you're up for it, and you find yourself in the Austin/Waco area, take a look at your TIS-B service and report back. Fly Safely! B |
Yes I have noticed the same issue near the Gray controlled airspace. I fly from DFW to T82 area 3-4 times per month, sometimes west of the restricted space but mostly east of Litle Int.
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No TIS-B near KGTU
I noticed a ?NO TIS-B?? message on my Dynon system (Dynon 261 mode S transponder, Skyview EFIS) during a flight near KGTU about two weeks ago...
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ADS-B Data
Historical flight activity can be obtained from Flightaware, Flightradar24, Radarbox, etc.
ADS-B Performance data is available from the FAA at: https://adsbperformance.faa.gov/PAPRRequest.aspx |
Wasn't the FAA planning to phase out TIS service when it replaced radars (that break and cannot be repaired?) Not sure if they would replace all radars in a service area at once, probably not. Just rampant speculation on my part.
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Update...
Good morning y'all...
The TIS-B outage in the Austin/Georgetown area resolved briefly on Friday, 11/1. Unfortunately, it came back on Saturday 11/2. I took a flight from KGTU to KLBB and watched my GTX-345/GTN-650 report radio station data for ADS-B; I observed that as the aircraft was 75NM Northwest of Station 11 (Rabbit Hill/Round Rock site) and began receiving the San Angelo site, TIS-B services were restored. The return trip showed the same results; TIS-B services ceased right around the Goldthwaite airport, transitioning from San Angelo to Rabbit Hill. Emails sent to adsb@faa.gov (9-AJE-ADSB) folks... Have a great weekend! |
You would think a mandated system would have outage Notams and a real time coverage map.
They do, it's not a great site and selecting areas gives little info in the popups. Lots of boxes and colors in your area: https://sapt.faa.gov/outages.php?out...Resolution=0.5 |
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