The U.S. Federal Aviation Administration has proposed a $255,000 civil penalty against United Airlines, alleging the carrier violated federal drug and alcohol testing regulations. According to the FAA, United allowed a flight attendant to perform safety-sensitive duties on 47 flights between May 2024 and July 2025 without completing the required return-to-duty process.
Under the FAA's rules, employees in safety-sensitive positions who fall under the agency's drug and alcohol testing program must complete a defined return-to-duty procedure before they can resume those duties. The agency alleges that process was not finished before the flight attendant returned to work, spanning dozens of flights over more than a year.
A proposed civil penalty is not a final finding. Airlines named in these actions typically have an opportunity to respond to the agency and discuss the allegations before any penalty is finalized, and the proposed amount can change during that process.
The case is part of a broader pattern of FAA enforcement around drug and alcohol testing compliance. Earlier in 2026, the agency proposed penalties against other major U.S. carriers over alleged lapses in follow-up and return-to-duty testing requirements, underscoring how closely regulators scrutinize the administrative steps that govern when safety-sensitive employees can fly.
The regulations exist to ensure that crew members and other safety-critical staff are cleared under a structured protocol after a testing-related event, rather than returning to duty prematurely. For an airline the size of United, which operates thousands of flights a day across a large workforce, the FAA's action is a reminder that the compliance burden extends well beyond the flight deck to the documentation and process controls that surround crew scheduling.
United has not been found liable, and the matter remains a proposed action at this stage. The airline can contest the allegations or negotiate with the FAA, and the outcome will depend on how the agency and the carrier resolve the specifics of the case.
Sources: Reuters, Aviation24. Featured image: AI-generated by AviationShop. By James Holloway.
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