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NTSB stands for the National Transportation Safety Board, the independent US federal agency that investigates every civil aviation accident in the United States. It also takes on significant railroad, transit, highway, marine, pipeline and commercial space accidents.
Its job is to work out why an accident happened, state a probable cause and recommend changes so it does not happen again. It is not part of the FAA or the Department of Transportation, and it has no power to write a rule or issue a fine.
That separation is the whole point. The agency that investigates is kept apart from the agencies it may have to criticize, and its reports regularly do.

| The NTSB at a glance | Details |
|---|---|
| Full name | National Transportation Safety Board |
| What it is | Independent federal agency, outside the Department of Transportation |
| Created | April 1, 1967 (fully independent from April 1, 1975) |
| Leadership | Five-member Board, nominated by the President and confirmed by the Senate |
| Chair | Jennifer Homendy |
| Staff | About 400 employees |
| Budget | $145 million (fiscal 2026) |
| Headquarters | Washington, DC |
| Investigates | Every US civil aviation accident, plus significant rail, transit, highway, marine, pipeline and commercial space events |
| Can it regulate or fine? | No |
NTSB vs FAA in two sentences
The FAA writes and enforces the rules of US aviation. The NTSB investigates when something goes wrong, including whether the FAA’s own rules or oversight played a part.
What Does NTSB Stand For?
NTSB is short for National Transportation Safety Board. In aviation, the acronym almost always turns up in one setting: a crash or serious incident, and the investigation that follows it.
The word “Transportation” matters. Aviation is the board’s best-known work, but Congress gave it every mode of transport, which is why NTSB investigators also appear at train derailments, highway crashes and pipeline explosions.
What the NTSB Investigates
By law, the NTSB investigates every accident involving a civil aircraft in the United States. It also investigates any accident involving both a military and a civil aircraft, with the participation of the military.
Outside aviation, it picks its cases. Congress charged it with “significant events” in the other modes, so an ordinary road crash is not NTSB business, but a passenger-train accident is.
| Mode | What the NTSB takes on |
|---|---|
| Aviation | Every civil aviation accident in the US, plus accidents involving both military and civil aircraft |
| Rail | Accidents involving passenger trains, and freight-train accidents with fatalities or significant property damage |
| Highway, transit, marine and pipeline | Significant events the board selects |
| Commercial space | Mishaps involving a fatality or serious injury, under a 2022 agreement with the FAA |
| Hazardous materials | Selected accidents that release hazardous materials, in any mode |
The aviation workload is enormous. The NTSB has investigated about 153,000 aviation accidents and incidents in the United States and assisted on more than 8,600 foreign aviation events, according to its fiscal 2027 budget submission.

Airliner crashes are the cases that make the news, but they are rare. Our look at how often planes actually crash puts the risk in numbers.
What the NTSB does not investigate
A crash involving only military aircraft. The law excludes public aircraft operated by the armed forces or an intelligence agency, so those fall outside the board’s remit. The January 2025 midair over the Potomac River came to the NTSB because a civil airliner was involved.

Why the NTSB Is Separate From the FAA
US accident investigation began with the Air Commerce Act of 1926, which gave the job to the Department of Commerce. In 1940 it passed to the Civil Aeronautics Board’s Bureau of Aviation Safety, a body that also wrote safety rules and regulated airline economics.
That arrangement had an obvious flaw: the same organization wrote the rules and then judged whether its rules had failed. Congress fixed it in stages.
1926
Air Commerce Act. Congress charges the Department of Commerce with investigating the causes of aircraft accidents.
1938
Civil Aeronautics Act. Creates the Civil Aeronautics Authority, with a three-member Air Safety Board to investigate accidents.
1940
The CAB takes over. The new Civil Aeronautics Board handles accident investigation alongside safety rulemaking and airline economic regulation.
1958
Federal Aviation Act. Creates the Federal Aviation Agency, forerunner of today’s FAA. The CAB keeps accident investigation.
April 1, 1967
NTSB created. It is set up inside the new Department of Transportation and takes over the CAB’s accident investigation role.
April 1, 1975
Fully independent. Under the Independent Safety Board Act of 1974, the NTSB leaves the Department of Transportation.
1996
Family assistance. The Aviation Disaster Family Assistance Act makes the NTSB coordinate federal support after fatal air carrier accidents.
2023
Two retirements. The NTSB Training Center closes in January, and the Most Wanted List ends after nearly 35 years.
January 2026
Potomac midair report. The board adopts its final report on the 2025 Washington collision, with 50 safety recommendations.
Today the NTSB sits outside the Department of Transportation entirely. If an FAA rule was inadequate, or FAA oversight failed, the board can say so in a final report.
It does. The Potomac midair report blamed the FAA’s placement of a helicopter route close to a runway approach path, and the Alaska Airlines Flight 1282 door-plug report cited the FAA’s “ineffective compliance enforcement surveillance” as a contributing factor.
How an NTSB Investigation Works
The go-team
When a major accident happens, the NTSB launches a go-team. Its members must be reachable 24 hours a day, and an investigator-in-charge leads it.
Specialists cover areas such as operations, structures, powerplants, systems, air traffic control, weather, human performance and survival factors. On a major launch, a Board member travels too, as the agency’s official spokesperson.
The party system
The NTSB brings in outside expertise by naming “parties” to an investigation. The FAA is a party automatically by law, and every other party, typically an organization whose employees, activities or products were involved, is the board’s choice.
There is a hard line on who may take part. No party representative may hold a legal position or represent claimants or insurers.
The recorders and the lab
Flight data recorders and cockpit voice recorders, the two black boxes, go to the NTSB’s Vehicle Recorder Division. It extracts and analyzes their data in labs at the Washington headquarters, and processed 529 recording devices in fiscal 2025.

Preliminary report, docket and final report
A preliminary report on an aviation accident is typically available within two weeks. Factual material is then released in a public docket as the investigation moves on.
The NTSB generally tries to finish an investigation within 12 to 24 months, and tells families to expect a final aviation report about 18 to 24 months after the accident. Major reports go to a public Board meeting, where the members adopt the findings, probable cause and recommendations.

The probable cause is the board’s plain statement of why the accident happened, often with contributing factors listed beside it. It is not a verdict: NTSB investigations are fact-finding proceedings, not conducted to decide “the rights, liabilities, or blame of any person.”
An NTSB report can't be used in a lawsuit
Federal law says no part of a Board report on an accident may be admitted into evidence or used in a civil action for damages. The rule keeps the investigation about preventing the next accident, not about who pays for this one.
Safety Recommendations: Influence Without Enforcement
Recommendations are the NTSB’s main product. It has issued more than 15,500 of them to more than 2,470 recipients since 1967.
None of them are binding. The board is not authorized to regulate transportation or take enforcement action, so a recommendation works only if the recipient acts on it.
Two things give them weight. The Secretary of Transportation must send a formal written response within 90 days, and the board publicly grades the answers it gets, as in its dispute with the FAA over the Potomac collision fixes.
The track record is strong. The recommended action has been implemented for 82 percent of the more than 12,700 recommendations the NTSB has closed.
Some recommendations reshaped the industry. After United Airlines Flight 173 ran out of fuel near Portland, Oregon, in December 1978, the board urged that flight crews be trained in “flight deck resource management,” the foundation of the crew resource management training airlines use today.
Others took years. The TWA Flight 800 investigation found that the 747’s center wing fuel tank had exploded, and the FAA’s 2008 rule to reduce fuel tank flammability cites that accident.
The Most Wanted List, now retired
From 1990 to the end of 2023, the NTSB published a Most Wanted List of its top safety priorities. The 2019-2020 edition tied 10 items to 267 open recommendations, including improving the safety of Part 135 aircraft flight operations.
The board retired the list at the end of 2023, after nearly 35 years. Any page that still describes it as current is out of date.
Recent High-Profile NTSB Aviation Investigations
Three recent cases show the range of the work, from a final report that indicted the air traffic system to an investigation still open.
| Accident | Date | Status and key finding |
|---|---|---|
| Alaska Airlines Flight 1282 door plug | January 5, 2024 | Final report June 24, 2025: Boeing failed to provide adequate training, guidance and oversight on its parts removal process |
| American Airlines Flight 5342 and Army Black Hawk midair, Washington | January 29, 2025 | Final report adopted January 27, 2026: 67 killed, 50 safety recommendations, including 33 to the FAA |
| UPS Flight 2976 MD-11F, Louisville | November 4, 2025 | Open: preliminary report found fatigue cracking; investigative hearing held May 2026 |
The Washington collision is the starkest example of the board turning on the system itself. Its probable cause named the FAA’s helicopter route, a failure to act on earlier recommendations and the air traffic system’s overreliance on visual separation.
The UPS crash killed 3 crew members and 11 people on the ground after the left engine and pylon separated on takeoff. No final report has been issued.
Who Runs the NTSB
The NTSB is led by a five-member Board. Members are nominated by the President, confirmed by the Senate and serve five-year terms, and no more than three may come from the same political party.
The President designates the Chair, with Senate confirmation, and the Vice Chair, and both serve three-year terms in those roles. A member can be removed for inefficiency, neglect of duty or malfeasance in office.
As of October 2026, the board lists three sitting members: Chairwoman Jennifer Homendy, Member Thomas B. Chapman and Member John DeLeeuw. Vice Chairman Michael Graham retired on October 2, leaving two seats vacant.
Another seat changed hands in 2025, when the White House dismissed Vice Chairman Alvin Brown in May. Brown challenged the removal in court.
Below the Board, the agency has about 400 employees at its Washington, DC, headquarters and field offices in Aurora, Colorado; Federal Way, Washington; and Anchorage, Alaska.
The NTSB’s Other Jobs
Appeals court for pilots and mariners
When the FAA takes action against a certificate held by a pilot, mechanic, air traffic controller, air carrier or repair station, the holder can appeal to the NTSB. The board is the appeals court for merchant mariners too.
A mariner’s case goes first to a Coast Guard judge, then to the Coast Guard’s Vice Commandant, and only then to the full Board.
Help for families
The Aviation Disaster Family Assistance Act of 1996 made the NTSB responsible for coordinating federal resources for families after an air carrier accident with loss of life.
Accidents abroad
The NTSB also carries out the US role under ICAO Annex 13, the international rules for accident investigation. When an aircraft operated by, or designed, built or registered to, a US company crashes in another country, the NTSB takes part, as it did as the US accredited representative for Air India Flight 171.
Training, and the end of the TWA 800 reconstruction
The NTSB Training Center in Ashburn, Virginia, closed in January 2023 and no longer offers outside training. Its best-known exhibit had already gone.

The reconstructed fuselage of TWA Flight 800 stopped being used on July 7, 2021, and a federal contractor dismantled it and destroyed the wreckage. The NTSB called the investigation behind it “exhaustive” and four years long.
The board found an explosion of the center wing fuel tank, most likely set off by a short circuit outside the tank that let excessive voltage in through the fuel quantity indication wiring. History.com describes it as the longest and, at $40 million, the costliest investigation in NTSB history at the time.
FAQ
Sources and references used for research and fact-checking.
- NTSB, History of The National Transportation Safety Board
- NTSB, About the NTSB
- NTSB, The NTSB Board
- NTSB, FY2027 Budget Submission
- NTSB, The Investigative Process
- NTSB, The Go Team
- NTSB, The Party System
- NTSB, Aviation Accident: Information for Families
- NTSB, NTSB Training Center
- NTSB, NTSB's TWA Flight 800 Reconstruction to be Decommissioned
- NTSB, Aircraft Accident Report AAR-00/03, TWA Flight 800
- NTSB, NTSB Retires Most Wanted List of Transportation Safety Improvements
- NTSB, NTSB Issues 2019-2020 Most Wanted List
- NTSB, NTSB and FAA Sign Agreement on Commercial Space Mishap Investigations
- NTSB, NTSB Vice Chairman Michael Graham Retiring
- NTSB, Systemic Failures Led to Midair Collision Over Potomac River in Washington
- NTSB, DCA25MA108 Investigation
- NTSB, DCA26MA024 Investigation (UPS Flight 2976)
- AvWeb, NTSB Releases UPS MD-11 Preliminary Report
- Cornell Legal Information Institute, 49 U.S. Code 1111, Organization and Membership
- Cornell Legal Information Institute, 49 U.S. Code 1131, General Authority
- Cornell Legal Information Institute, 49 U.S. Code 1132, Civil Aircraft Accident Investigations
- Cornell Legal Information Institute, 49 U.S. Code 1135, Secretary of Transportation's Responses to Safety Recommendations
- Cornell Legal Information Institute, 49 U.S. Code 1154, Discovery and Use of Cockpit and Surface Vehicle Recordings and Transcripts
- Cornell Legal Information Institute, 49 CFR 831.11, Parties to the Investigation
- Cornell Legal Information Institute, 49 CFR 831.4, Nature of Investigation
- FAA, A Brief History of the FAA
- Federal Register, Reduction of Fuel Tank Flammability in Transport Category Airplanes
- Mass Transit, National Transportation Safety Board Marks 50 Years of Saving Lives
- Safety+Health, Jennifer Homendy remains NTSB chair
- FLYING, Former NTSB Vice Chair Sues Trump Over Removal
- History.com, TWA Flight 800 crash investigation
- Wikipedia, United Airlines Flight 173
- USAJOBS, Aviation Accident Investigator, GS-13
- USAJOBS, Aviation Accident Investigator (Team Lead), GS-14
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About the Author
Matt Claiborne is an FAA Airline Transport Pilot and Certified Flight Instructor with more than two decades of experience in flight training. He has served as an assistant professor and FAA Part 141 Assistant Chief Instructor for a university aeronautics program in Florida. His background in professional flying, flight instruction, and aviation education gives him firsthand expertise in aircraft operations, pilot training, flight procedures, and aviation safety.