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Comment by ceejayoz | Hacker News Reader

They'll all have both in and out capability. (It's typically the same device.)

Military aircraft have permission from the FAA to turn off one, or both, for fairly obvious reasons. https://nbaa.org/aircraft-operations/communications-navigati...

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I don't think the Black Hawk can support ADS-B In and usually its the surveillance type aircraft that carry it. I updated my post above. There is limited cockpit space in Black Hawks anyways. There might be a specific modernization occurring for a variant of UH-60 that has ADS-B IN, but vast majority do not.

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.

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 :)

It's really not that rare. Especially with stuff like ForeFlight.

https://download.aopa.org/advocacy/2019/dhowell_jking_DASC20...

> A majority of respondents had used ADS-B In, with 56% of respondents reported having experience with either an installed or portable system. Of the group who had experience with ADS-B In, 85% used portable systems and 30% used installed systems.

And that's in 2019.

No disagreement. ADS-B IN is just a feature that most military aircraft to include UH-60's (Black Hawk) do not have yet.

Sounds like they should sort it out before placing civilians in danger

In retrospect, it was a bad plan to let a young Captain who mostly served as a liaison in DC and not a helicopter pilot to train on that route. A simpler one where she could progressively train up to would have been wiser. She also should have listened to her more well seasoned Warrant Officer copilot. ADS-B In wouldn’t have addressed any of those problems

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