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Bill

Bill

S 4990

McCarty and Heideman Air Safety Enhancement Act

119th Congress Introduced by John Curtis and 5 co-sponsors

The bill directs the FAA to review and update low-altitude obstruction markings and lighting, consult stakeholders, and implement changes within a year to reduce aircraft strikes.

Introduced in Senate
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Bill Summary · S 4990

Overview

  • Bill: S. 4990 (McCarty and Heideman Air Safety Enhancement Act)
  • Session: 119th Congress
  • Introduced: July 15, 2026
  • Primary purpose: Require the FAA Administrator to review and update policies, regulations, and guidance related to low-altitude airspace safety, with a focus on improving handling of temporary obstructions such as slacklines and other low-altitude hazards. The bill also establishes a stakeholder consultation process and requires a briefing to Congress.

Purpose and Intent

  • To enhance safety in low-altitude airspace by ensuring FAA regulations and guidance adequately address temporary obstructions and related risk factors.
  • Specifically aims to clarify and potentially improve how obstructions like slacklines, highlines, wires, and similar temporary hazards are marked, lit, or identified to reduce risk of aircraft strikes.

Key Provisions

  1. Review of FAA Policies and Regulations (Section 2(a))
  2. Due Date: Within 6 months after enactment.
  3. Action: The FAA Administrator, in consultation with specified stakeholders, must review existing FAA policies and regulations related to low-altitude airspace safety.
  4. Objective: Identify appropriate policy, operational, or technical improvements, including updated requirements related to markings on slacklines.

  5. Considerations for Review (Section 2(a)(2))

  6. The Administrator must consider:

    • Adequacy and clarity of obstruction marking and lighting policies for slacklines, highlines, wires, and similar temporary obstructions, and their effectiveness in reducing low-altitude aircraft strikes.
    • Potential improvements to Notices to Airmen (NOTAMs), obstacle data, and other aeronautical information to support consistent digital depiction across flight planning tools, EFBs, avionics, and related systems (including coordinates, dimensions, effective dates/times, responsible parties, and required markings/lighting).
    • Enhanced coordination with federal, state, tribal, and local land management agencies (e.g., National Park Service, BLM, USFS) regarding activities that create low-altitude hazards.
    • Whether penalties for violations of low-altitude airspace requirements are sufficient.
    • Improvements to FAA outreach to non-aviation communities whose activities may create airspace hazards to raise awareness and compliance.
  7. Stakeholder Consultation (Section 2(a)(3))

  8. Stakeholders to consult include:

    • Helicopter and powered-lift operators and pilots
    • Air medical operators
    • General aviation pilots and aircraft owners
    • Agricultural aviation operators
    • Uncrewed aircraft system operators
    • Aviation safety experts with vertical flight expertise
    • Other relevant stakeholders as determined by the Administrator
  9. Updated Regulations, Guidance, and Policies (Section 2(b))

  10. If the review finds that current policies do not adequately address markings or lighting for slacklines or other temporary obstructions, the Administrator must update FAA regulations, guidance, or policies as necessary.

  11. Timeline: Updates to be completed not later than 1 year after enactment.

  12. Congressional Briefing (Section 2(c))

  13. Not later than 90 days after completing the review, the Administrator must brief:

    • Senate Committee on Commerce, Science, and Transportation
    • Senate Committee on Appropriations
    • House Committee on Transportation and Infrastructure
    • House Committee on Appropriations
  14. Briefing content to include:

    • Findings of the review
    • Regulations, guidance, or policies to be updated
    • Any recommended legislative actions to improve low-altitude airspace safety

Who Is Affected

  • Federal Aviation Administration policies, regulations, and guidance related to low-altitude airspace safety.
  • Stakeholders including helicopter/powered-lift operators, air medical operators, general aviation pilots and owners, agricultural aviation, UAS operators, and aviation safety experts.
  • Agencies involved in land management (federal, state, tribal, local) and non-aviation communities affected by airspace hazards.

Procedural and Timeline Highlights

  • 6 months: FAA must complete the initial policy/regulatory review.
  • 1 year: If needed, FAA must implement updates to regulations, guidance, or policies.
  • 90 days after completion: FAA must brief congressional committees on findings, upcoming changes, and potential legislative recommendations.

Potential Impact

  • Improved clarity and enforcement of markings/lighting for temporary low-altitude obstructions.
  • More consistent, accurate aeronautical data across flight-planning tools and avionics.
  • Enhanced coordination with land-management and non-aviation stakeholders to mitigate low-altitude hazards.
  • Potential changes in penalties and FAA outreach to broader communities to improve compliance and safety in the National Airspace System.

Compiled from official sources — confirm details with the bill’s official record.

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