Congress Just Mandated ADS-B In for Most Aircraft by 2031. Here’s What GA Pilots Need to Know.

The House Committee on Transportation and Infrastructure passed the ALERT Act 62-0 on March 26, 2026 — and its ADS-B In mandate puts a real date on the calendar: December 31, 2031. If you’re a GA pilot still flying without an ADS-B receiver, the “I’ll deal with it eventually” window is closing.

Here’s what the bill actually says, what it means for general aviation pilots, and why pilots who’ve already built the habit of flying with a portable receiver are already ahead.

What the ALERT Act Actually Requires

The Airspace Location and Enhanced Risk Transparency (ALERT) Act was written in the shadow of the January 2025 midair collision near Reagan National Airport, where an American Airlines flight and a U.S. Army Black Hawk helicopter collided and killed all 67 people aboard. The National Transportation Safety Board found that ADS-B In technology could have given both flight crews the critical seconds they needed to see each other and react.

The ALERT Act’s core mandate is straightforward: most aircraft must be equipped with ADS-B In capability no later than December 31, 2031.

Crucially, the bill explicitly recognizes portable solutions. The legislation requires the FAA to allow “any collision prevention technology, including portable ADS-B In receivers that display on a portable device, electronic flight bag, or panel-mounted display.” That language matters — it’s not a mandate to panel-mount a $3,000 certified avionics box. A portable receiver feeding an iPad EFB qualifies under the law.

The bill also includes provisions from the Pilot and Aircraft Privacy Act (PAPA) — prohibiting the use of ADS-B data to collect fees from pilots or to initiate investigations based solely on ADS-B tracking. These were long-sought protections from AOPA and got folded into this bill with strong bipartisan support.

Where Things Stand Legislatively

The path to law is still a few steps away. The ALERT Act passed the House Transportation and Infrastructure Committee but still needs a full House floor vote and reconciliation with the Senate’s competing bill, the ROTOR Act.

The Senate’s ROTOR Act, which passed unanimously in December 2025, actually goes further — it mandates a stronger, military-inclusive ADS-B In requirement that Cruz and Cantwell say is necessary to prevent another DCA-type collision. The ALERT Act, in their view, doesn’t go far enough on military aircraft exemptions.

That tension will play out in conference. The most likely outcome is legislation that lands somewhere between the two bills — with some form of ADS-B In mandate for civil aircraft and ongoing debate over military exemptions. Either way, the direction of travel is clear: ADS-B In is coming.

What pilots should be watching: if the full House votes before the Senate recess window closes in April, reconciliation could happen this spring. If not, this extends into the summer session. Regardless, the 2031 compliance deadline appears likely to survive any final bill.

What This Means If You’re Flying GA Today

Five years sounds like a lot. It’s not, if you think about it in terms of aircraft ownership and upgrade cycles.

If you own your aircraft, you’ve got five years to figure out your ADS-B In solution. The good news is that the law gives you maximum flexibility — portable receivers feeding an EFB satisfy the requirement. You don’t have to modify your panel or get a shop involved unless you want to.

If you rent, the responsibility is on the flight school or FBO. But it’s worth asking now whether the aircraft you’re training in will be equipped — because by 2031, a non-equipped aircraft is a grounded aircraft for flights where the mandate applies.

If you’re experimental or limited category, the ALERT Act exempts you. But the community trend toward ADS-B awareness is moving regardless of regulatory pressure.

Why Portable Receivers Are the Right Answer for Most GA Pilots

The portable receiver approach has always been the practical one for general aviation — and the ALERT Act just codified that it’s also the legal one.

Here’s the real-world equation: a panel-mounted ADS-B In solution from a certified avionics shop runs several thousand dollars plus installation time. A portable ADS-B receiver like Stratux runs $439.99 with internal GPS and takes about five minutes to set up. Both give you traffic on your iPad in ForeFlight. Both will comply with the mandate.

The argument for portable goes further than price. A portable receiver moves between aircraft — it works in your Cessna today and your friend’s Piper next weekend. A panel-mounted unit is married to that airframe. In a rental context, portable is the only option.

It also fits the open-source philosophy that’s driven the Stratux project since 2015. The receiver’s firmware is maintained by the same GA pilot community that actually uses it. Features get added because real pilots ask for them. Bugs get fixed because real pilots find them. That’s a different model than waiting for a manufacturer’s firmware roadmap.

ADS-B In vs. Out: The Distinction That Still Trips People Up

Quick clarification for pilots who know they “have ADS-B” but aren’t sure which kind:

ADS-B Out broadcasts your aircraft’s position to ATC and other aircraft. The FAA mandated ADS-B Out for flights in Class A, B, and C airspace (and above 10,000 feet in Class E) since January 2020. Most active GA aircraft already have this.

ADS-B In receives those position broadcasts from other aircraft and displays them in your cockpit. This is what the ALERT Act mandates — and what was missing from the Black Hawk and Flight 5342 on January 29, 2025. The Army helicopter wasn’t broadcasting in a way the airline crew’s avionics would have caught, and the airline crew had no ADS-B In display in the cockpit. The gap that ADS-B In would have closed — a visual alert showing the helicopter’s position — is exactly why NTSB has recommended the mandate 18 separate times.

If you have a Stratux (or any portable ADS-B receiver) connected to ForeFlight, you have ADS-B In. You’re already operating the way the ALERT Act will eventually require.

What to Actually Do Right Now

Three things worth doing before this bill finishes its legislative journey:

1. Verify you have ADS-B In working on every aircraft you fly regularly. Not just “I own a Stratux” — but that it’s connected, receiving traffic, and you know how to read it. The value is in the habit, not the box.
2. If you rent, ask your flight school. Ask whether the fleet will be ADS-B In compliant by the mandate deadline. This is a legitimate question and most schools are already thinking about it.
3. If you don’t have a portable receiver yet, now’s the time. Prices and technology are good right now. The 2031 deadline creates a demand surge eventually — better to be ahead of it than behind it.

The ALERT Act isn’t the final word on ADS-B In legislation — that will come out of reconciliation with the Senate. But the vote tally (62-0 in committee) and the bipartisan Senate pressure make the outcome near-certain: ADS-B In is coming for most GA aircraft before 2032.

Start flying with it now. Don’t wait for the law to make you.

Get Set Up Before the Mandate Arrives

The Stratux ADS-B Receiver with Internal GPS ($439.99) is the portable solution most GA pilots in our community fly with. It receives both 1090 MHz and 978 MHz (UAT) traffic, feeds ForeFlight, WingX, FlyQ, and every major EFB over Wi-Fi, and sets up in under five minutes. Open source, repairable down to the component, and already compliant with what the ALERT Act will require.

Questions about how this fits your specific setup? Drop a comment below or find us in the Stratux Discord — we’re in there every day.

Sources: AOPA, March 26 2026 | Senate Commerce Committee, March 2026 | NTSB recommendations (18 separate filings on ADS-B In)