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Bill

S 5311

Cabin Air Safety Act of 2026

119th Congress Introduced by Richard Blumenthal and 2 co-sponsors

Creates a framework to detect, report, investigate, and mitigate engine oil/hydraulic fume events in cabin air with real-time monitoring, training, and data disclosure.

Introduced in Senate
0
WeVote Research Nonpartisan
Bill Summary · S 5311

Summary of Bill: Cabin Air Safety Act of 2026 (S. 5311, 119th Congress)

  • Purpose and intent

    • Aims to improve safety and transparency related to air quality in aircraft cabins, specifically addressing engine oil or hydraulic fluid smoke/fume events in aircraft bleed air systems.
    • Establishes a dedicated framework (Chapter 454) within the FAA’s regulatory structure to prevent, detect, report, and investigate air contamination events, and to enhance response procedures.

  • Key provisions and changes

    • Definitions
    • Creates Chapter 454: Cabin Air Quality and Safety.
    • Defines terms such as “Administrator” (FAA Administrator) and “engine oil or hydraulic fluid smoke or fume event.”
    • Training (Section 45402)
    • Within 180 days of enactment, the FAA must issue a notice of proposed rulemaking requiring annual training for flight attendants, pilots, aircraft mechanics, and airport first responders on how to respond to engine oil/hydraulic fluid smoke or fume events (for Part 121 operations).
    • Training materials to cover sources/types of contamination, recognition descriptors (odor, location, flight phase), potential health impairments, response procedures, reporting requirements, and event reporting system.
    • Reporting system (Section 45403)
    • By FAA Reauthorization Act of 2024 timeline, develop a standardized, voluntary reporting system for pilots, flight attendants, and mechanics to report engine oil/hydraulic fluid events on passenger aircraft (Part 121).
    • Collects data such as flight/aircraft details, description and location of fumes, source, phase of flight, duration, medical attention, and other relevant factors.
    • FAA to issue submission guidelines, provide confirmation of receipt, and maintain a restricted-use database.
    • Public publication of data allowed only in aggregated form; individual-event data and submitter-identifiable information are protected.
    • Allows data use for oversight of safety management systems and for sponsor-driven studies; carriers may receive relevant information excluding personal identifiers.
    • Investigations (Section 45404)
    • FAA may initiate investigations into reported events, with mandatory initiation if medical symptoms requiring more than first aid occur.
    • Investigations involve gathering statements from crew/medical personnel, reviewing prior reports, examining aircraft components, identifying causes, and coordinating with carriers and labor representatives.
    • Air quality monitoring equipment (Section 45405)
    • Within 180 days, require detection equipment on aircraft to identify contamination sources in real time, monitor markers for engine oil/hydraulic fumes, notify flight deck, and support isolation decisions.
    • Training for pilots on communication and source isolation protocols with crews and controllers.
    • Authorizes FAA to regulate maintenance measures to prevent/mitigate contamination in consultation with NIOSH, OSHA, and EPA.
    • Minimum equipment list (Section 45406)
    • Require inclusion of the mandated air quality monitoring equipment in the master minimum equipment list for transport-category aircraft with bleed air systems.
    • Funding (Section 45407)
    • Authorization of appropriations as necessary to implement the chapter.
    • Exclusions
    • Does not apply to rotorcraft.
    • Revisions to and integration with existing law
    • Amends and expands the FAA Reauthorization Act framework related to fume/smoke events, renaming and broadening the reporting provisions to engine oil/hydraulic fluid events.
    • Requires updates to the FAA’s table of contents and related conforming amendments to reflect Cabin Air Safety Act provisions.

  • Who would be affected

    • Airline operators (domestic and international) operating under Part 121 in the U.S.
    • Flight crews, flight attendants, aircraft mechanics, and airport emergency responders.
    • Air carriers’ labor representatives (collective bargaining units).
    • Aircraft manufacturers (eventual integration of monitoring equipment into aircraft manuals and minimum equipment lists).
    • Public (through aggregated, de-identified data via a new public website and quarterly reports).

  • Timeline and process highlights

    • Training and equipment requirements: proposed rulemaking within 180 days; equipment and reporting system implementations follow related timelines (e.g., 180 days for equipment requirement; one-year timeframe for finalizing aircraft-manufacturer guidance).
    • Ongoing data collection and public reporting: quarterly public data releases with a searchable, redacted database.

Overall, the bill creates a structured approach to detect, report, investigate, and mitigate cabin air contamination from engine oil or hydraulic fluid fumes, with enhanced training, real-time detection, data transparency, and stronger oversight mechanisms.

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

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