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I have a older style Garmin 530. Can I use this GPS as the position source for an ADS-B installation?

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    $\begingroup$ I'm trying to find the FAA requirement but you must have an ADS-B certified WAAS GPS source for your ADS-B transceiver. $\endgroup$
    – Ron Beyer
    Jul 4, 2016 at 4:02
  • $\begingroup$ Garmin still offers an upgrade of the 530 to 530W. It is $3,995 for the upgrade. There will be some additional costs from the shop for replacing the antenna. The upside is that you can buy a cheaper ADS-B unit since the 530 can provide position info. buy.garmin.com/en-US/US/p/597181 $\endgroup$
    – JScarry
    Oct 5, 2017 at 14:53

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In the USA, ADS-B requires a WAAS position source. A Garmin 530W can be used, but not a 530.

Here's a full list of FAA certified equipment needed for ADS-B. I hope that helps.

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You'll need a WAAS GPS source if you need to comply with the ADS-B mandate but there are quite a few GA pilots who only fly VFR in regions where the ADS-B mandate does not apply.

It is permissable to use a non WAAS GPS source with your transponder if you wish to voluntarily transmit ADS-B in airspace where the mandate does not apply. The FAA and EASA seem to have gone out of their way to conceal that fact.

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