What Aviation Figured Out That Medicine Still Hasn’t - Create a Medical NTSB: The MIU
The NTSB investigates every plane crash with one goal: never again. When an ObGyn adverse outcome occurs, most hospitals investigate with a different goal: move on.
I have been watching Malpractice, a British medical drama on ITV. Season 2 centers on the obstetrics and psychiatry departments of an NHS hospital in Leeds/UK, where a psychiatric registrar finds himself caught between two patients on a chaotic night shift and a new mother dies.
What follows is not a courtroom thriller.
It is something more interesting: a dedicated team called the Medical Investigation Unit — the MIU — systematically pulling apart what happened, who knew what, when the moment of no return arrived, and whether the institution itself created the conditions for the outcome. The show is fiction, but the structural question it raises is real. Britain has built, at least on television, a model worth examining. The United States has not built one at all.
We have malpractice litigation. We have risk management departments whose primary function is legal defense. We have mortality and morbidity conferences that, in most institutions, operate under a culture of self-protection rather than honest inquiry. What we do not have is an independent, structured, blame-free investigation process applied systematically to obstetric adverse outcomes. What we have instead is the NTSB — but only for airplanes.
What the NTSB Is, and Why It Works
The National Transportation Safety Board was established in 1967 by President Lyndon B. Johnson as part of the Department of Transportation Act. It became fully independent in 1975, after Congress concluded that no agency can investigate safely if it is answerable to the same body it is investigating. That independence is the core of the model.
Since 1967, the NTSB has investigated more than 153,000 aviation accidents. It has issued more than 15,500 safety recommendations to more than 2,470 recipients. Roughly 82 percent of its closed recommendations have been implemented. Aviation is one of the safest forms of transportation in human history, and a significant part of the reason is that when something goes wrong, a dedicated independent agency finds out exactly why — and tells everyone.
The methodology is specific. When a crash occurs, the NTSB dispatches a “Go Team” — between three and a dozen specialists — to the scene immediately. Each specialist investigates a defined domain: operations, structures, systems, human performance, air traffic control, survival factors. Nobody is asked to assess their own department. Nobody has a financial interest in the outcome. The investigation produces a probable cause determination — not a verdict, not a punishment — and a set of safety recommendations addressed to whoever has the power to make the relevant change.
Three features make the NTSB model work. First, independence: the investigators are not employed by the airline, the manufacturer, or the regulator. Second, scope: the investigation examines the whole system, not just the individual at the center of the event. Third, purpose: the goal is a safety recommendation, not a legal judgment. Fault is documented when relevant, but blame is not the product. Prevention is the product.
What ObGyn Adverse Outcome Review Looks Like in the United States
A woman dies in labor. Or a baby is born with hypoxic-ischemic encephalopathy, with injuries that will define the next several decades of a family’s life. What happens next?
In most American hospitals, the answer runs roughly as follows. Risk management is notified. The chart is reviewed, usually by people with a professional interest in the outcome of any future litigation. A peer review process may occur, protected from legal discovery in most states under peer review statutes. If a malpractice claim is filed, attorneys take over. Settlements are reached, often confidential. The case closes.
What is almost never produced: a structured, independent, systematic analysis of what happened, what the standard of care required at each decision point, whether there was a deviation, and whether that deviation caused the outcome. What is almost never shared: the findings with the team that was involved, the department that shares the same workflows, the institution that uses the same protocols.
The lesson, if there is one, dies with the case. The next team walks into the same system.
The British Model — and Its Limitations
Malpractice is not a documentary. The MIU it depicts moves faster than any real investigation, has access to information that would take months to subpoena in practice, and resolves its cases in five episodes. But the structural argument the show makes is sound: there is value in an entity whose only job is to find out what happened, without being answerable to the hospital, the insurer, the licensing board, or the family’s attorneys.
The United Kingdom does, in fact, have mechanisms that move in this direction. NHS England operates the Healthcare Safety Investigation Branch, now the Health Services Safety Investigations Body (HSSIB), an independent body that investigates patient safety incidents with a stated commitment to learning rather than blame. It is not a perfect analogue to the NTSB. It does not have the same independence, the same resources, or the same cultural authority. But the principle is there.
The United States has nothing comparable for medicine. The Joint Commission accredits hospitals and reviews sentinel events, but it is neither independent nor focused on systemic learning. State medical boards investigate licensing matters. Malpractice litigation produces discovery, but it is adversarial by design — structured to assign liability, not to understand causation. None of these is the NTSB.
What We Should Do
I am not naive about the politics of this proposal. The malpractice liability system in the United States creates enormous disincentives for transparency. Hospitals and clinicians resist independent investigation precisely because findings could be used in litigation. Any serious move toward an NTSB-style model for medicine would require federal legislation granting investigation findings the same protection from legal discovery that exists for aviation accident reports.
That protection already exists in aviation. NTSB findings and the cockpit voice recordings that inform them are not admissible in civil litigation. That is not an accident. Congress made a deliberate choice that safety learning was more valuable than litigation ammunition. We have not made that choice for medicine.
The recommendation I would make to ACOG, SMFM, and Congress is this: create an independent obstetric adverse outcome investigation board, modeled on the NTSB. Give it independence from CMS, the Joint Commission, state licensing boards, and the insurance industry. Give its findings the same legal protection from discovery that aviation investigation reports carry. Fund it. Require that every maternal death, every intrapartum fetal demise, every case of birth-related hypoxic-ischemic encephalopathy be reported to it. Require that its recommendations be tracked and their implementation publicly reported.
Some countries have moved in this direction. The Netherlands has a maternal mortality review process with independent investigators. The United Kingdom has MBRRACE-UK, the confidential inquiry into maternal deaths, which produces population-level learning that has measurably improved practice. Australia has the Consultative Councils on Obstetric and Paediatric Mortality and Morbidity. The United States, which spends more on maternity care than any country in the world, has no equivalent.
What We Can Do Right Now
Waiting for Congress is not a strategy. What ObGyn departments can do right now, without legislation, is adopt the methodology even without the mandate.
The NTSB does not investigate because it is required to be heroic. It investigates because it has a structured process that it applies consistently, without exception, to every event it covers. That process can be adapted. The four legal elements of a malpractice case — duty, breach, causation, and damage — map cleanly onto a clinical investigation framework. The NTSB’s phase-by-phase approach — establish the facts, review the record, assess each decision against the standard, examine communication, examine system factors, determine causation, generate prevention recommendations — is not proprietary. It is a logic that any department can apply.
I have built a free tool that does exactly that. The ObGyn Adverse Outcome Investigation Checklist at tools.obmd.com walks a review team through all eight phases of a structured investigation, maps each phase to one of the four legal elements, and — when you are ready — lets you ask Claude to analyze the case data you have entered, identify gaps in the investigation, and generate NTSB-style prevention recommendations with specific responsible parties and deadlines.
It will not replace an independent investigation body. But it will replace the silence that currently follows most adverse outcomes in American obstetrics.
My Take
Aviation figured something out sixty years ago that medicine has still not accepted: the goal of investigating a catastrophic event is not to assign blame. It is to prevent the next one. The NTSB is not a court. It does not sentence pilots or ground airlines. It determines probable cause, issues recommendations, and tracks whether they are implemented. Its power comes entirely from the quality of its analysis and the transparency of its findings.
The show I watched on ITV is canceled after two seasons. The MIU will not be coming back. But the question it asked is not going away: who investigates when something goes wrong in medicine, and what is their goal? In the United States right now, the honest answer is: the attorneys do, and their goal is to win.
We can do better.
The NTSB shows us exactly how.
ObGyn Adverse Outcome Investigation Checklist — free, interactive, browser-based. tools.obmd.com/ob-case-review