Summary of HR 4994 - Safe Air on Airplanes Act

Purpose and Intent

The Safe Air on Airplanes Act (HR 4994) aims to enhance the safety and quality of air on commercial aircraft by phasing out the use of bleed air systems. These systems, which draw compressed air from aircraft engines, have raised health concerns regarding the inhalation of oil fumes and other contaminants by passengers and crew.

Key Provisions

The bill mandates the following actions by the Federal Aviation Administration (FAA):

1. Prohibition of New Bleed Air Systems:

   • New type-certified turbine and turbo-prop aircraft designs will be prohibited from utilizing bleed air systems.

2. Implementation of Filters:

   • Starting seven years after the enactment of the bill, all newly manufactured aircraft with bleed air systems must be equipped with filters or air cleaning devices designed to remove harmful gaseous and particulate components from oil fumes.

3. Phase-Out Schedule:

   • The bill establishes a phased approach to eliminate bleed air systems in existing aircraft designs:
     • 10 years after enactment: 25% of turbine and turbo-prop aircraft must be manufactured without bleed air systems.
     • 20 years after enactment: 50% of such aircraft must be manufactured without bleed air systems.
     • 30 years after enactment: 100% of such aircraft must be manufactured without bleed air systems.

Definition of Bleed Air System

For the purposes of this legislation, a bleed air system is defined as:
- An air system that uses compressed air taken from an aircraft engine or auxiliary power unit compressor stage, upstream of the combustion chamber.
- This system provides pressurized air to the aircraft's pneumatic system, which passengers or crew could potentially inhale or come into contact with during operation.

Affected Parties

• Aircraft Manufacturers: The bill will impact manufacturers of turbine and turbo-prop aircraft, requiring them to adapt their designs and production processes to comply with the new regulations.
• Passengers and Crew: The legislation aims to improve the health and safety of those on board by reducing exposure to potentially harmful air contaminants.

Legislative Process

• Introduced: August 19, 2025
• Referred to: House Committee on Transportation and Infrastructure on the same day.

Sponsors

• Primary Sponsor: Maxwell Frost
• Cosponsors: Michael Lawler, John Garamendi

This bill represents a significant step towards ensuring safer air quality in commercial aviation, addressing health concerns associated with existing aircraft systems.