The NTSB Investigation Process: What It Is, How It Works, and What It Means for You

Why the NTSB Is Investigating, and Why That Is Not a Fault Finding

The National Transportation Safety Board (NTSB) is the federal agency Congress directed to investigate civil aircraft accidents. Under 49 U.S.C. § 1131, the Board "shall investigate or have investigated (in detail the Board prescribes) and establish the facts, circumstances, and cause or probable cause" of aircraft accidents within its authority, along with certain highway, railroad, pipeline and marine accidents.

The same statute gives an NTSB investigation priority over investigations by other federal agencies, generally. Other agencies, including the Federal Aviation Administration (FAA), may take part, but the statute says they "may not participate in the decision of the Board about the probable cause of the accident." One exception matters in rare cases: if the Attorney General notifies the Board that the accident may have been caused by an intentional criminal act, the Board gives investigative priority to the FBI, though it may continue its own work.

The purpose of the work is safety. The NTSB's own rule, 49 C.F.R. § 831.4, says it investigates "to determine the facts, conditions, and circumstances relating to an accident," uses those results to find probable causes, and issues safety recommendations "to prevent or mitigate the effects of a similar accident." The same rule says its investigations are "fact-finding proceedings with no adverse parties" and "are not conducted for the purpose of determining the rights, liabilities, or blame of any person or entity."

For a family or an injured passenger, that last sentence shapes everything that follows. The NTSB is not a court, and its conclusions are not a verdict for or against a pilot, an operator or a manufacturer. If you are waiting for the investigation to say who is responsible, it helps to know it is not built to answer that question. Whether anyone may be legally responsible is a separate inquiry, and one an attorney can help sort out alongside the NTSB's work.

What Happens in the First Days After a Crash

How does the NTSB investigate a plane crash in its first hours? Its rule describes the start plainly: the NTSB "begins an investigation by monitoring the situation and assessing available facts to determine the appropriate investigative response." After that initial assessment, it notifies the people and organizations it expects will be affected about how far its investigative response will go.

Federal regulations also require that certain aircraft accidents and incidents be reported to the NTSB. An accident generally involves serious injury, death or substantial damage to the aircraft, while an incident is a lesser event affecting safety. The precise definitions and reporting duties are set out in the NTSB's notification regulations, and which category an event falls into shapes how the agency responds.

The scale of the response varies. Some investigations involve investigators traveling to the site; others are handled with fewer resources. What does not vary is the kind of material the NTSB treats as part of its investigation. Under 49 C.F.R. § 831.13, that includes "photographs, visual representations of factual data, physical evidence from the scene of the accident, interview statements, wreckage documentation, flight data and cockpit voice recorder information, and surveillance video."

That rule also requires anyone participating in the investigation to promptly provide that information to the NTSB, unless the NTSB authorizes them to keep it. The Investigator-in-Charge (IIC), the NTSB investigator who leads a particular investigation, directs that work.

If you are wondering what is happening in the days after a crash, it is this gathering of wreckage, recordings, data and statements. Some people at this stage find it useful to note whether the NTSB has said how large its response will be, and to keep their own photos, documents and witness names. Which of that material may matter later in a civil claim is something a conversation with an attorney can help clarify.

Which Companies Help the NTSB, and Why That Matters to Your Case

A party, in NTSB terms, is an organization or agency the IIC designates to help with the investigation. Under 49 C.F.R. § 831.11, only those whose people, work or products were involved in the accident, and who can supply qualified technical staff, can become parties. The rule puts it this way: party status "is limited to those persons, Federal, state, or local government agencies and organizations whose employees, functions, activities, or products were involved in the accident and that can provide suitable qualified technical personnel to actively assist in an investigation."

In practice, that can mean the aircraft operator, the companies that built the airframe or engine, or a labor group whose members were involved. Except for the FAA, "no entity has a right to participate in an NTSB investigation as a party." Parties "must follow all directions and instructions from NTSB representatives," and party status may be revoked or suspended if a party withholds information or acts in a way that is "prejudicial or disruptive to an investigation."

For an injured person or family, one part of the rule may be reassuring: the companies helping the investigation are not supposed to bring their lawyers or insurers into it. No party representative "may occupy a legal position or be a person who also represents claimants or insurers," and breaking that rule can lead to sanctions, including loss of party status. Party representatives, other than those of federal agencies, must sign a written statement accepting these limits.

Families of those killed are not parties. Their place in the process comes from a separate federal statute, 49 U.S.C. § 1136, covered below.

Here is the tension you may notice. A company whose product or operation was involved may help the NTSB build its factual record, and that same company may later be a defendant in a civil case. Party status does not mean a company did anything wrong; it reflects technical involvement. But it means the party list can be a useful signal of which organizations were connected to the accident, and if you are weighing a claim, an attorney can help assess what that list does and does not suggest.

How Long the Investigation Takes and What Each Report Means

The investigation moves from collecting facts to analyzing them. The NTSB's rule says it uses its factual results "to determine one or more probable causes of an accident," and that an investigation "may result in a report or brief of the NTSB's conclusions or other products," including "factual records, safety recommendations, and other safety information."

The probable cause is the NTSB's determination of what, in its judgment, caused or contributed to the accident. It is a safety conclusion, reached through a process that, by the agency's own rule, is not adjudicatory. It does not decide negligence, a product defect or liability.

Before a final report, the NTSB may release earlier factual material. A preliminary report is an early factual account of what investigators have learned; it is not a probable cause and should not be read as one. Factual records released along the way describe what was found, not why the accident happened. The NTSB's records on aircraft such as the Cirrus SR22 and the Robinson R44 helicopter show how many investigations remain open while that factual work continues.

At the end, 49 U.S.C. § 1131 requires the Board to "report on the facts and circumstances of each accident investigated by it," and to make each report public at no cost in an online database on its website.

The statute sets no fixed deadline, but it does build in accountability: if a report "is not completed within 2 years from the date of the accident," the Board must tell the House Committee on Transportation and Infrastructure and the Senate Committee on Commerce, Science, and Transportation why, and report progress to each committee every 90 days until it is done.

For a family waiting on answers, knowing which stage the investigation is in helps make sense of what has, and has not, been released. Because the NTSB has no fixed deadline while civil claims do, some people weigh whether to wait for the final report at all. How those two timelines fit together is a question an attorney can help work through.

Why the NTSB's Report Cannot Decide Your Civil Claim

49 U.S.C. § 1154(b) states: "No part of a report of the Board, related to an accident or an investigation of an accident, may be admitted into evidence or used in a civil action for damages resulting from a matter mentioned in the report."

In practical terms, a final report's probable cause cannot simply be handed to a jury as proof of what happened. The underlying facts are a different matter: physical evidence, flight data, witness accounts and company records exist apart from the report, and in a civil case parties generally seek them through discovery, the court-supervised exchange of evidence.

Cockpit recordings have their own rule. Under § 1154(a), a party generally may not use discovery to obtain a cockpit voice or video recording, or parts of a transcript or still images the NTSB has not made public. A court may allow it only after reviewing the material privately and deciding the public portions are not enough for a fair trial, and then only under a protective order limiting its use.

A civil claim rests on its own legal standards. A negligence claim asks about a duty, a breach of that duty, causation and damages. A product liability claim, which concerns a defective aircraft, engine or component, asks about a defect and whether it caused the harm. Whether either is met depends on the facts and on the law of the state involved, because comparative fault rules, damages rules and limitation periods differ from state to state. No single deadline applies everywhere, and the type of claim and the defendant can affect which rule applies.

If you are trying to sort out how an open investigation, its record and these legal standards fit together after a crash, you may want to consider a conversation with our attorney about where things stand.

What Families Are Entitled to Know During the Investigation

49 U.S.C. § 1136, the family assistance provision, applies to an aircraft accident in U.S. airspace involving an air carrier or foreign air carrier, an airline or similar company carrying passengers commercially, that results in any loss of life and for which the NTSB is the lead investigative agency.

For those accidents, the NTSB Chairman must designate a director of family support services, an NTSB employee who serves as your federal point of contact and a liaison with the carrier. If you have lost someone in one of these accidents, you can also expect contact from an independent nonprofit organization the Chairman designates to coordinate emotional care, psychological care and family support services. Its role is to give families a place where they "may grieve in private," to stay in regular contact, to explain what the agencies and the carrier are each responsible for, and to arrange a memorial service in consultation with families.

The NTSB has primary federal responsibility for helping recover and identify those who died. During the investigation, it must, "to the maximum extent practicable," ensure families are briefed before any public briefing about the accident and its findings, and are individually informed of and allowed to attend any public hearings and meetings of the Board about the accident. Recent NTSB records for carriers such as Alaska Airlines show the kinds of events this statute addresses.

The statute also says that after an accident involving an air carrier in interstate or foreign air transportation, or a foreign air carrier accident in the United States, no unsolicited communication about a potential personal injury or wrongful death action may be made by an attorney or potential party to an injured person or a relative "before the 45th day following the date of the accident."

This provision is written for air carrier accidents. Accidents involving a charter (Part 135) operator, a company certificated for on-demand commercial flights, or private flights may stand differently under it, depending on the facts. And the family assistance role is about information and support, not legal representation or compensation: receiving these briefings and services does not resolve or replace a claim. A wrongful death claim, brought by family members or an estate after a death caused by another's wrongful act, is a separate process governed largely by state law, on its own timeline. If you are unsure whether this statute applies to the flight involved, or how its support fits beside a possible claim, those are questions an attorney can help sort out.

Questions Worth Asking When an Investigation Is Still Open

An open investigation leaves families and injured passengers in a strange middle place: some facts are public, many are not, and the final answer may be a long way off. The NTSB's public docket, the publicly available collection of factual reports, exhibits and other documents released during an investigation, is one place people follow what has been found. Section 831.11 notes that party names and representatives may appear in documents placed in that docket.

A few questions tend to come up at this stage. What has the NTSB released so far, and is it a preliminary or factual document rather than a probable cause? Which organizations were designated as parties? What physical evidence, records and recordings exist, and who holds them? Accident records for operators such as Air Methods illustrate how much an open file can contain before any cause is stated.

The legal side moves on its own track. Limitation periods are set mainly by state law and differ by state, by the type of claim, whether negligence, product liability or wrongful death, and by who the defendant is. Whether anything pauses a particular deadline is a question for that law, not for the NTSB's schedule. If you were hurt, or lost someone, the records that usually matter include medical records, photos, any incident reports, travel and flight documents, and the names of witnesses. Holding the investigation and the legal timeline side by side, rather than waiting on one to answer the other, is often what brings the clearest picture.