US House Passes ALERT Act Mandating ADS-B In by 2031

The U.S. House of Representatives has passed a landmark aviation safety bill in response to the fatal 2025 midair collision over the Washington, D.C. area. The legislation, known as the Airspace Location and Enhanced Risk Transparency (ALERT) Act, passed on April 14, 2026, with a decisive bipartisan vote of 396 to 10.

The bill directly addresses safety recommendations issued following the crash that claimed 67 lives, mandating new collision avoidance technology for both civilian and military aircraft. The legislation sets a deadline of December 31, 2031, for the installation of Automatic Dependent Surveillance-Broadcast (ADS-B) In and advanced Airborne Collision Avoidance System (ACAS) technology. This move aims to prevent a recurrence of the systemic failures identified by the National Transportation Safety Board (NTSB) in its investigation.

Background on the 2025 Collision

The legislative action was spurred by the catastrophic midair collision on January 29, 2025, between an American Airlines CRJ700, operating as Flight 5342, and a U.S. Army Black Hawk helicopter. The incident occurred in Class B airspace near Ronald Reagan Washington National Airport (DCA), resulting in the deaths of all 64 people on the commercial jet and 3 on the military helicopter.

In its final report published in January 2026, the NTSB issued 50 safety recommendations. The investigation cited poor helicopter route design, an over-reliance on see-and-avoid principles in congested airspace, and degraded situational awareness at the Potomac Terminal Radar Approach Control (TRACON) as probable causes. Investigators found that the practice of combining helicopter and local control positions at the DCA tower contributed to the breakdown in air traffic separation.

Key Provisions of the ALERT Act

The ALERT Act (H.R. 7613) is designed as a comprehensive technological and procedural overhaul. Its central requirement is the equipage of aircraft with ADS-B In capabilities. While ADS-B Out, which broadcasts an aircraft's position, has been required since 2020, ADS-B In allows an aircraft to receive those signals, giving pilots a direct electronic view of surrounding traffic on a cockpit display. This provides a layer of safety independent of ATC verbal commands.

The bill also incorporates provisions from the proposed Military ADS-B Out Loophole Act. This measure restricts the ability of military helicopter pilots to deactivate their ADS-B Out transponders during non-sensitive flight missions in high-density airspace, a factor that has complicated air traffic management.

According to Rep. Sam Graves, Chairman of the House Transportation and Infrastructure Committee, the bill is a "bipartisan and comprehensive response" that addresses all 50 of the NTSB's recommendations. Rep. Mike Rogers, Chairman of the House Armed Services Committee, stated the legislation "improves aviation safety without undermining our national security."

However, the bill faces some opposition. Sen. Ted Cruz, a key figure in the Senate Commerce Committee, warned that the ALERT Act "would not deliver the safety measures necessary to prevent another midair collision" and criticized it for leaving loopholes.

Historical Precedents

This legislative response follows a historical pattern where major accidents drive regulatory change. In 1986, the midair collision between Aeroméxico Flight 498 and a Piper Cherokee over Cerritos, California, led to the mandate for Traffic Collision Avoidance Systems (TCAS) on commercial aircraft and the expansion of what is now Class B airspace. Similarly, a 2009 midair collision over the Hudson River between a light aircraft and a tour helicopter prompted the FAA to restructure the VFR corridor and implement new ATC procedures. The ALERT Act continues this precedent, pushing for a technological solution to the persistent risks of mixed civilian-military operations in congested airspace.

Technical Analysis

This legislation represents a significant, albeit delayed, shift from a broadcast-only surveillance environment to a collaborative, see-and-be-seen electronic system. It addresses a critical gap between civilian and military operations in congested airspace, a problem highlighted by both the 2025 DCA and 2009 Hudson River incidents. The 2031 deadline creates a predictable, multi-billion dollar market for avionics manufacturers like Garmin and Collins Aerospace but poses a significant retrofit challenge and cost for airlines and the Department of Defense. This mirrors the TCAS II mandate post-Cerritos. The legislative push also reflects an increasing reliance on technological solutions over procedural ones like visual separation, acknowledging the limits of human performance in complex airspace.

What Comes Next

The bill now moves to the U.S. Senate for consideration, where a vote is expected in mid-to-late 2026. If it passes the Senate and is signed into law, the Federal Aviation Administration (FAA) will be tasked with creating the final rule for the ADS-B In mandate. The confirmed implementation deadline for all affected aircraft to be equipped with the required collision prevention technology is December 31, 2031.

Why This Matters

The ALERT Act marks a pivotal regulatory response to a preventable tragedy, accelerating the adoption of next-generation collision avoidance technology. It aims to fundamentally change how civilian and military aircraft interact in dense airspace, moving beyond reliance on visual separation and ATC intervention towards a system where aircraft are electronically aware of each other. For airlines, the military, and avionics suppliers, it sets a clear but costly path for fleet upgrades over the next decade.