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| | |-+  Radar images and audio rules regarding the 5 minute day law, or lack of law..
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Author Topic: Radar images and audio rules regarding the 5 minute day law, or lack of law..  (Read 1353 times)
av8tor172
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« on: May 15, 2014, 02:38:38 PM »

From time to time I come across websites that say something like this:
"Audio and Video is delayed about 5 minutes in accordance with United States Federal Regulations"

These are typically mode-s / radar sites / ATC comms.

I have looked long and hard for the "Federal Regulation" regarding this, is it a real regulation or just some BS that makes someone feel good??

Please point to to the CFR # that contains such a regulation.

Thanks
George
www.MilAirComms.com
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swa4678
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« Reply #1 on: May 15, 2014, 04:16:54 PM »

It's in the agreement for Class Two users of the FAA-provided source of filtered data called ASDI. It's simply a restriction the FAA has imposed on this data that they provide.

It doesn't, for example, forbid you to use such data if you are otherwise able to acquire it. This is why sites like FlightRadar24 and whatnot can use volunteer-based ADS-B feeders to display truly "live" data that augments their fallback source of the 5-minute delayed data provided by the FAA.
« Last Edit: May 15, 2014, 05:26:18 PM by swa4678 » Logged
av8tor172
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« Reply #2 on: May 15, 2014, 05:21:54 PM »

Thanks, that makes more sense. I hate when a website makes a law out of something that is not...

Thanks
George
www.MilAirComms.com
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AeroBill
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« Reply #3 on: May 16, 2014, 06:01:17 PM »

Thanks SWA4678 for the info on the flight delay. The entire Agreement Memorandum for class two users
(i.e. FlightAware and others) can be read by going to the fly.faa.gov site, or type in your browser "asdi class two".
Its a PDF file. Make sure you look at the Ver 1.4A file. The 5 minute or more delay information is on page 2 of the 13 page agreement.

« Last Edit: May 16, 2014, 06:11:06 PM by AeroBill » Logged
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