The Federal Aviation Administration employs 44,979 people. Somewhere among them are the workers who ensure your flight does not end as a smoking hole in a field, and somewhere else, apparently, is a filing cabinet where the FAA keeps its definition of who those workers actually are. A new report from the Department of Transportation’s Office of Inspector General, published September 16, opens with a premise that should alarm anyone who has ever boarded a commercial aircraft. The agency responsible for the safest airspace in the world cannot agree, internally, on what “safety critical” means.
This is not a rhetorical flourish. It is the finding of an audit mandated by Section 429 of the FAA Reauthorization Act of 2024, which directed the OIG to check whether FAA had built the workforce plans Congress requires and whether those plans actually captured the people the agency depends on to keep planes in the sky and out of each other’s flight paths. The answer, delivered with the dry precision OIG reports specialize in, is that FAA does the legal minimum and calls it a system.
A Word That Means Four Different Things
FAA’s Office of Human Resource Management maintains four separate classifications for its workforce, Safety Critical, Mission Critical, Public Safety, and Mission Support. Each carries its own definition, and each was built for a different bureaucratic purpose. Safety Critical and Mission Critical exist to determine who gets furloughed. Public Safety and Mission Support, introduced in 2025, exist to determine who gets exempted from the Deferred Resignation Program, the buyout scheme that thinned federal payrolls that year. Meanwhile, the Aviation Safety Workforce Plans covering fiscal years 2020 through 2024 used an entirely different three-tier scheme (Safety Critical, Safety Technical, Operational Support), which was swapped out for the Public Safety and Mission Support categories in fiscal year 2025, then swapped back to the original three tiers in fiscal year 2026.
Read that again. In three consecutive fiscal years, FAA changed the taxonomy it uses to describe its own safety workforce three times, and at least one of those changes was explicitly tied to determining who was eligible for a voluntary resignation incentive rather than to any operational or safety rationale. An FAA official told OIG investigators that a common definition “would be welcomed,” which is bureaucratese for an admission that after decades running the National Airspace System, nobody has bothered to write one down in a way that survives contact with the next personnel action.
The Quarter of the Workforce Nobody Is Watching
The practical consequence of this definitional fog is a coverage gap that would be comic if the stakes were lower. FAA is legally required to publish two annual workforce plans, one for air traffic controllers and one for the aviation safety inspectors and engineers in the Office of Aviation Safety. Combined, those plans account for 19,862 employees, 44 percent of the agency’s total workforce.
Left out entirely: 10,808 employees, roughly a quarter of everyone FAA itself classifies as Mission Critical or Public Safety, appear in no workforce plan whatsoever. That population includes Airport Safety Inspectors, who hold the identical occupational classification as the Office of Aviation Safety inspectors who are covered, and who spend their days checking runway lighting, markings, and emergency equipment. It includes first-line and operational air traffic managers, the people who supervise the controllers the agency does track. It includes engineers scattered across the Air Traffic Organization and the Office of Commercial Space Transportation, the latter a growth industry the report itself flags as expanding. FAA’s justification, relayed to OIG officials without apparent irony, is that the agency “only completes workforce plans that are mandated by law.” Not the ones that would be useful. The ones that are mandatory.
The Data Nobody Asked For, Which Is Exactly the Data You’d Want
Even the two plans FAA does publish are thinner than they look. Neither the Air Traffic Controller Plan nor the Aviation Safety Workforce Plan includes information on gaps in senior positions, meaning nobody outside the agency can tell how long a critical supervisory slot sits empty before it gets filled, or how long the average vacancy period runs for the most consequential jobs in the building. Neither plan addresses employee competencies or skills gaps, despite both including sections on training initiatives, an odd omission for documents ostensibly meant to answer the question of whether the workforce is actually prepared to do the job. Neither includes information on workforce development or cooperative training programs, and the Air Traffic Organization, which houses the controller workforce, does not run any workforce development or cooperative training programs of its own to omit.
FAA is separately unable to explain how it manages conflicts of interest when its safety inspectors rotate through training with the aerospace companies those same inspectors are supposed to be regulating, a gap Section 429 specifically required the agency to account for. The Office of Aviation Safety pointed OIG toward its general ethics order and annual training requirements, which address personal conduct broadly but say nothing about the specific arrangement of an inspector cycling through industry-sponsored instruction and back onto that industry’s oversight file.
The Minimum Viable Compliance
FAA’s official response to all this, dated September 2 and signed by a deputy director in the agency’s own Office of Audit and Evaluation, concurs with all four of OIG’s recommendations. It also states, without evident self-awareness, that the agency has “successfully completed” every workforce plan the law requires. Both statements are true, and that is precisely the problem the report identifies. Compliance with a statute that nobody bothered to make comprehensive is not the same thing as knowing who your safety-critical workforce is, and FAA has spent five years proving it can do the former while declining to do the latter.
The agency’s remedy, per its own comments, involves mapping occupational series to statutory responsibilities, drafting guidance for a standardized three-category workforce segmentation, and building a succession planning program, all of it promised for completion by September 30, 2027. That is a full fiscal year and a full congressional term of runway before the agency that runs the world’s busiest airspace commits to knowing, on paper, who is actually keeping it safe. Until then, the 10,808 people currently invisible to their own employer’s planning documents will keep doing the work anyway. The paperwork will simply keep pretending they don’t.
Sources: DOT OIG, FAA’s Aviation Safety Workforce Planning (September 16, 2026); FAA Reauthorization Act of 2024, H.R. 3935.
