NTSB preliminary report cites chronic close calls at DCA; recommends permanent helicopter-route changes

The Subcommittee on Aviation and Space of the Senate Committee on Commerce, Science, and Transportation heard updates on the National Transportation Safety Board’s investigation of the Jan. 29 midair collision that killed 67 people and involved an Army Black Hawk and American Airlines Flight 5342.

NTSB Chair Jennifer Homendy told the panel that her agency’s preliminary report found more than 15,000 close‑proximity events between helicopters and commercial aircraft at Reagan National Airport (DCA) between October 2021 and December 2024, including 85 occasions with vertical separation under 200 feet. “We determined that the separation distances between helicopter traffic operating on Route 4 and aircraft using Runways 15 and 33 are insufficient,” Homendy said, and the board recommended the FAA prohibit operations on the portion of Helicopter Route 4 between Haynes Point and the Wilson Bridge when those runways are in use.

Why it matters: Committee members said the NTSB data show a systemic risk, not an isolated incident. Ranking Member Tammy Duckworth, a former Black Hawk pilot, described an erosion of the aviation system’s margin of safety and repeated warnings about staffing and technology shortfalls. Senator Ted Cruz and others pressed witnesses on whether the collision could have been prevented had the FAA acted on surveillance and voluntary reporting data earlier.

The FAA’s acting administrator, Chris Rocheleau, told the committee the agency accepted the NTSB’s urgent safety recommendations and had already restricted mixed helicopter and fixed‑wing operations around DCA immediately after the accident. Rocheleau said the FAA will make permanent the restriction of nonessential helicopter operations in portions of DCA’s Class B airspace and will require ADS‑B Out broadcasts in DCA Class B airspace “with very limited exceptions.” He also said the agency is reviewing other airports with mixed helicopter and fixed‑wing activity and is using machine learning tools to surface trends in large data sets of incident reports.

The NTSB emphasized that its preliminary report is strictly factual and does not determine probable cause; the final report is expected within about a year. Homendy said the investigation has involved diving operations, wreckage reconstruction, flight‑recorder analysis and interviews, and that about 40 NTSB investigators are leading the probe.

Committee members repeatedly asked how long the FAA had the surveillance and voluntary reporting data that Homendy cited and why those data apparently did not lead to earlier changes. Homendy said the board requested and analyzed FAA data; she declined to say whether FAA staff had independently reviewed the same data prior to the collision. Rocheleau acknowledged gaps in trend analysis and said the FAA has begun applying new analytic tools to detect emerging hazards faster.

What was urged and ordered: The NTSB recommended permanent closure of the portion of Route 4 when Runways 15 or 33 are in use and requested the FAA identify and publish an alternative helicopter routing. The FAA has accepted the NTSB recommendations and converted its immediate post‑accident restrictions into permanent actions for DCA Class B airspace. The FAA also said it will continue a national “hotspot” review of other airports where helicopter and fixed‑wing routes intersect.

The hearing also made plain that other questions remain open — including why the Black Hawk’s pressure altitude readings were later judged invalid, why the helicopter’s ADS‑B transmissions were not received by FAA ground stations for many days prior to the accident, and whether military exemptions for ADS‑B use were applied broadly. NTSB Chair Homendy said the board will pursue all lines of evidence and issue findings at the conclusion of its investigation.

The hearing closed with lawmakers urging faster, more systematic FAA action on long‑standing safety recommendations and with NTSB reiterating its role as an evidence‑driven investigative authority.