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Comment by ceejayoz

8 months ago

Every aircraft in controlled airspace is required to have ADS-B transponders, and any aircraft with Out has In as well (In is the easy one; it just listens; you can even build your own with a Raspberry Pi - https://www.flightaware.com/adsb/piaware/build/ and a $36 receiver https://flightaware.store/products/pro-stick). You can buy a portable ADS-B In receiver the size of a wallet for $400 and get traffic alerts on an iPad. https://flywithsentry.com/buy

My dad's little four seat hobby plane has both In/Out. You can track him on FlightAware as a result, because it's continually broadcasting its location; it's certainly not rare or sophisticated equipment.

Here's a military Blackhawk toodling around as we speak: https://globe.adsbexchange.com/?icao=ae27fc

https://www.avweb.com/aviation-news/blackhawk-ads-b-was-off-...

> The Army Black Hawk helicopter crew involved in the midair collision with an American Eagle CRJ700 last January at Reagan National Airport had turned off ADS-B because they were practicing a classified flight profile, according to a New York Times investigation.

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ceejayoz

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firesteelrain  8 months ago

We are both in agreement that ADS-B OUT is required. But, I am referring to ADS-B IN which most military aircraft do not have as a matter of practice. If ADS-B IN was running in addition to ADS-B OUT on both aircraft then it might have provided additional situational awareness assuming the Black Hawk pilot was operating the helicopter properly. The original comment was about putting the receiver in listening mode and that's simply not possible with the Black Hawk.

I have been running an ADS-B receiver at home for 6 years via PiAware along with an AIS receiver. So yes, low cost :)