NTSB Flightpath Exhibit For 2019 Alaska Mid-air Collision
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The National Transportation Safety Board (NTSB) is an independent U.S. government investigative agency responsible for civil transportation accident investigation. In this role, the NTSB investigates and reports on
aviation accidents and incidents An aviation accident is an event during aircraft operation that results serious injury, death, or significant destruction. An aviation incident is any operating event that compromises safety but does not escalate into an aviation accident. Pre ...
, certain types of highway crashes, ship and marine accidents, pipeline incidents,
bridge failures A bridge is a structure built to Span (engineering), span a physical obstacle (such as a body of water, valley, road, or railway) without blocking the path underneath. It is constructed for the purpose of providing passage over the obstacle, whi ...
, and railroad accidents. The NTSB is also in charge of investigating cases of
hazardous materials Dangerous goods are substances that are a risk to health, safety, property or the Natural environment, environment during transport. Certain dangerous goods that pose risks even when not being transported are known as hazardous materials (syll ...
releases that occur during transportation. The agency is based in
Washington, D.C. Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with ...
It has three regional offices, located in
Anchorage, Alaska Anchorage, officially the Municipality of Anchorage, is the List of cities in Alaska, most populous city in the U.S. state of Alaska. With a population of 291,247 at the 2020 United States census, 2020 census, it contains nearly 40 percent of ...
;
Aurora, Colorado Aurora (, ) is a List of municipalities in Colorado#Home rule municipality, home rule city located in Arapahoe County, Colorado, Arapahoe, Adams County, Colorado, Adams, and Douglas County, Colorado, Douglas List of counties in Colorado, counti ...
; and
Federal Way, Washington Federal Way is a city in King County, Washington, United States and part of the Seattle metropolitan area. One of the most recently incorporated cities in the county, its population was 101,030 at the 2020 United States census, 2020 census. Feder ...
. The agency also operated a national training center at its Ashburn facility.


History

The origin of the NTSB was in the
Air Commerce Act The Air Commerce Act of 1926 created an Aeronautic Branch of the United States Department of Commerce. Its functions included testing and licensing of pilots, certification of aircraft and investigation of accidents. In 1934, the Aeronautics Branc ...
of 1926, which assigned the
United States Department of Commerce The United States Department of Commerce (DOC) is an executive department of the U.S. federal government. It is responsible for gathering data for business and governmental decision making, establishing industrial standards, catalyzing econ ...
responsibility for investigating domestic aviation accidents. Before the NTSB, the
Federal Aviation Administration The Federal Aviation Administration (FAA) is a Federal government of the United States, U.S. federal government agency within the United States Department of Transportation, U.S. Department of Transportation that regulates civil aviation in t ...
's (FAA; at the time the CAA/ Civil Aviation Authority) independence was questioned as it was investigating itself and would be biased to find external faults, coalescing with the 1931 crash killing Notre Dame coach
Knute Rockne Knute Kenneth Rockne (; March 4, 1888 – March 31, 1931) was an American football player and coach at the University of Notre Dame. Leading Notre Dame for 13 seasons, Rockne accumulated over 100 wins and three national championships. Rockne is ...
and the 1935 crash that killed Senator Bronson Cutting. The United States's first "independent" ''Air Safety Board'' was established in 1938: it lasted only fourteen months. In 1940, this authority was transferred to the
Civil Aeronautics Board The Civil Aeronautics Board (CAB) was an agency of the federal government of the United States, formed in 1940 from a split of the Civil Aeronautics Authority and abolished in 1985, that regulated aviation services (including scheduled passe ...
's newly formed Bureau of Aviation Safety. On April 1, 1967, the Congress created a separate cabinet-level Department of Transportation, which among other things, established the Federal Aviation Administration as an agency under the DOT. At the same time, the NTSB was established as an independent agency which absorbed the Bureau of Aviation Safety's responsibilities. However, from 1967 to 1975, the NTSB reported to the DOT for administrative purposes, while conducting investigations into the Federal Aviation Administration, also a DOT agency. To avoid any conflict, the Congress passed the Independent Safety Board Act, and on April 1, 1975, the NTSB became a fully
independent agency A regulatory agency (regulatory body, regulator) or independent agency (independent regulatory agency) is a government authority that is responsible for exercising autonomous jurisdiction over some area of human activity in a licensing and regu ...
. , the NTSB has investigated over 140,000 aviation incidents and several thousand surface transportation incidents.


Organization

Formally, the "National Transportation Safety Board" refers to a five-manager investigative board whose five members are nominated by the President and confirmed by the
Senate A senate is a deliberative assembly, often the upper house or chamber of a bicameral legislature. The name comes from the ancient Roman Senate (Latin: ''Senatus''), so-called as an assembly of the senior (Latin: ''senex'' meaning "the el ...
for five-year terms. Board members may continue to serve until a successor is confirmed and takes office. No more than three of the five members may be from the same political party. One of the five board members is nominated as the chair by the President and then approved by the Senate for a fixed three-year term; another is designated as vice-chair for a fixed three-year term and who becomes acting chair when there is no formal chair.The Board at NTSB
Retrieved June 18, 2014
This board is authorized by Congress under Chapter 11, Title 49 of the
United States Code The United States Code (formally The Code of Laws of the United States of America) is the official Codification (law), codification of the general and permanent Law of the United States#Federal law, federal statutes of the United States. It ...
to investigate civil aviation, highway, marine, pipeline, and railroad accidents and incidents. This five-member board is authorized to establish and manage separate sub-offices for highway, marine, aviation, railroad, pipeline, and hazardous materials investigations. Since its creation, the NTSB's primary mission has been "to determine the probable cause of transportation accidents and incidents and to formulate safety recommendations to improve transportation safety (in the USA)". Based on the results of investigations within its jurisdiction, the NTSB issues formal safety recommendations to agencies and institutions with the power to implement those recommendations. The NTSB considers safety recommendations to be its primary tool for preventing future civil transportation accidents. However, the NTSB does not have the authority to enforce its safety recommendations.


Current board members

The board members are:


Accident and incident investigations

The NTSB is the lead agency in investigating a civil transportation accident or incident within its sphere. An investigation of a major accident within the
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
typically starts with the creation of a "go team", composed of specialists in fields relating to the incident who are rapidly deployed to the incident location. The "go team" can have as few as three people or as many as a dozen, depending on the nature of the incident. The agency may then hold public hearings on the issue following the investigation. Ultimately, it will publish a final report which may include safety recommendations based on its findings. The NTSB has no legal authority to implement or impose its recommendations. Its recommendations are often implemented by regulators at the federal or state level or by individual transportation companies. If the structure of an aircraft remains largely intact during a crash and does not transmit gravitational forces to occupants that a human cannot tolerate, the NTSB deems it a survivable incident. Humans can generally tolerate 4 to 5
G's The g-force or gravitational force equivalent is a mass-specific force (force per unit mass), expressed in units of standard gravity (symbol ''g'' or ''g''0, not to be confused with "g", the symbol for grams). It is used for sustained ac ...
.


Jurisdiction over investigations

;Aviation: The NTSB has primary authority to investigate every civil aviation accident in the United States; the agency is also authorized to conduct investigations involving both civilian and military aircraft "with the participation of appropriate military authorities". Aviation includes certain commercial space accidents. For certain accidents, due to resource limitations, the Board will ask the FAA to collect the factual information at the scene of the accident; the NTSB bases its report on that information. ;Surface Transportation: The NTSB has the authority to investigate all highway accidents and incidents, including incidents at railway grade crossings, "in cooperation with a State". The NTSB has primary jurisdiction over railway accidents and incidents which result in death or significant property damage, or which involve a passenger train. ;Marine: For marine investigations, jurisdiction into investigations is divided between the NTSB and the U.S. Coast Guard. The division of investigative jurisdiction and responsibilities is prescribed in a detailed Memorandum of Understanding between the two agencies. ;Pipeline: The NTSB has primary jurisdiction over pipeline incidents (often the result of third-party excavation damage) which involve "a fatality, substantial property damage, or significant injury to the environment". ;Assistance to criminal investigations: The NTSB has primary jurisdiction over civil transportation investigations, not criminal ones. If the
Attorney General In most common law jurisdictions, the attorney general (: attorneys general) or attorney-general (AG or Atty.-Gen) is the main legal advisor to the government. In some jurisdictions, attorneys general also have executive responsibility for law enf ...
declares the case to be linked to a criminal act, the NTSB must relinquish control of the investigation to the
Federal Bureau of Investigation The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
. The NTSB may still provide technical support to the FBI in such investigations. In two high-profile examples, the NTSB sent aviation accident investigators with knowledge of aircraft structures and flight recorders to assist the FBI's criminal investigation into the murder-suicide of Pacific Southwest Airlines Flight 1771 in 1987, and the
September 11, 2001, attacks The September 11 attacks, also known as 9/11, were four coordinated Islamist terrorist suicide attacks by al-Qaeda against the United States in 2001. Hijackers in the September 11 attacks#Hijackers, Nineteen terrorists hijacked four com ...
fourteen years later. ;Assistance to other domestic agencies: In addition to assisting the Department of Justice in criminal investigations, the NTSB has also assisted the
National Aeronautics and Space Administration The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the United States's civil space program, aeronautics research and space research. Established in 1958, it su ...
(NASA) in its investigations of both the '' Challenger'' and the ''Columbia'' Space Shuttle disasters. The NTSB can also assist the
U.S. military The United States Armed Forces are the military forces of the United States. U.S. federal law names six armed forces: the Army, Marine Corps, Navy, Air Force, Space Force, and the Coast Guard. Since 1949, all of the armed forces, except th ...
in investigating military incidents within the realm of the NTSB's expertise, such as the crash of an Air Force transport plane in former
Yugoslavia , common_name = Yugoslavia , life_span = 1918–19921941–1945: World War II in Yugoslavia#Axis invasion and dismemberment of Yugoslavia, Axis occupation , p1 = Kingdom of SerbiaSerbia , flag_p ...
that killed more than 30 Americans, including
Commerce Secretary The United States secretary of commerce (SecCom) is the head of the United States Department of Commerce. The secretary serves as the principal advisor to the president of the United States on all matters relating to Commerce, commerce. The sec ...
Ron Brown Ronald Harmon Brown (August 1, 1941 – April 3, 1996) was an American politician and lobbyist who served as the 30th United States Secretary of Commerce during the first term of President Bill Clinton. Before this, he was chairman of the Democ ...
. ;Assistance to foreign governments: The NTSB may assist in incident or accident investigations outside the United States under certain circumstances. These may include accidents or incidents involving American-registered or American-owned civil aircraft or aircraft with U.S.-manufactured components in foreign air space. Officially, NTSB employees are prohibited from releasing information about "another country's investigation", although this has happened in the past.


Use of the "party system"

To conduct its investigations, the NTSB operates under the "party system", which utilizes the support and participation of industry and labor representatives with expertise or technical knowledge specifically useful to its investigation. The NTSB may invite these individuals or organizations to become parties to the investigation and participate under the supervision of the NTSB. The NTSB has discretion over which organizations it allows to participate. Only individuals with relevant technical expertise can represent an organization in an investigation, and attorneys and insurance investigators are prohibited by law from participating. The NTSB considers the party system crucial to the investigative process, as it provides the NTSB with access to individuals with specialized expertise or knowledge relevant to a particular investigation. However, the use of the party system is not without controversy. The NTSB invited
Boeing The Boeing Company, or simply Boeing (), is an American multinational corporation that designs, manufactures, and sells airplanes, rotorcraft, rockets, satellites, and missiles worldwide. The company also provides leasing and product support s ...
to participate as a party to the investigation of the crash of
TWA Flight 800 Trans World Airlines Flight 800 (known as TW800 or TWA800) was a regularly scheduled international passenger flight from John F. Kennedy International Airport in New York City, United States, to Fiumicino Airport in Rome, Italy, with a stopo ...
, a
Boeing 747 The Boeing 747 is a long-range wide-body aircraft, wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2023. After the introduction of the Boeing 707, 707 in October 1958, Pan Am ...
, in 1996. While the NTSB relied on Boeing's sharing of expertise, it was later determined that Boeing had withheld a study of military versions of the 747 that investigated flammable vapor combustion in the center fuel tank. Boeing had told the NTSB that it had no studies proving or disproving the vapor combustion theory. In response to political pressure after the Boeing incident, the NTSB commissioned the nonprofit
Rand Corporation The RAND Corporation, doing business as RAND, is an American nonprofit global policy think tank, research institute, and public sector consulting firm. RAND engages in research and development (R&D) in several fields and industries. Since the ...
to conduct an independent study of the NTSB's aircraft investigation process. In 2000, Rand published its report, which concluded that the party system is "a key component of the NTSB investigative process" and that participant parties "are uniquely able to provide essential information about aircraft design and manufacture, airline operations, or functioning of
he National Airspace System He or HE may refer to: Language * He (letter), the fifth letter of the Semitic abjads * He (pronoun), a pronoun in Modern English * He (kana), one of the Japanese kana (へ in hiragana and ヘ in katakana) * Ge (Cyrillic), a Cyrillic letter cal ...
that simply cannot be obtained elsewhere". However, Rand also found conflicts of interest inherent in the party system, "may, in some instances, threaten the integrity of the NTSB investigative process". The Rand study recommended that the NTSB reduce its reliance on party representatives and make greater use of independent investigators, including from
NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...
, the
Department of Defense The United States Department of Defense (DoD, USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, ...
, government research laboratories, and universities. , the NTSB has not adopted these recommendations and instead continues to rely on the party system.


Safety recommendations adopted

, the NTSB has issued about 14,000 safety recommendations in its history, 73 percent of which have been adopted in whole or in part by the entities to which they were directed. From 1990 to 2023, the NTSB annually published a "Most Wanted List", which highlighted safety recommendations that the NTSB believed would provide the most significant — and sometimes immediate — benefit to the traveling public. Among transportation safety improvements brought about or inspired by NTSB recommendations: * Aviation: Mid-air collision avoidance technology,
ground proximity warning system A Ground Proximity Warning System (GPWS) is a system designed to alert pilots if their aircraft is in immediate danger of flying into the ground or an obstacle. The United States Federal Aviation Administration (FAA) defines GPWS as a type of ...
s,
airborne wind shear detection and alert system The airborne wind shear detection and alert system, fitted in an aircraft, detects and alerts the pilot both visually and aurally of a wind shear condition. A reactive wind shear detection system is activated by the aircraft flying into an area wi ...
s, smoke detectors in lavatories and fuel tank inerting. * Highway: Graduated drivers license laws for young drivers, age-21 drinking laws, smart airbag technology, center high-mounted stop lights, commercial drivers licenses, and improved school bus construction standards. * Rail:
Positive train control Positive train control (PTC) is a family of automatic train protection systems deployed in the United States. Most of the United States' national rail network mileage has a form of PTC. These systems are generally designed to check that trains a ...
, improved emergency exits for passenger rail cars, and double-shelf couplers for hazardous material rail cars. * Marine: Recreational boating safety, improved fire safety on
cruise ship Cruise ships are large passenger ships used mainly for vacationing. Unlike ocean liners, which are used for transport, cruise ships typically embark on round-trip voyages to various ports of call, where passengers may go on Tourism, tours k ...
s, and lifesaving devices on fishing vessels. * Pipeline: Excavation damage prevention, pipe corrosion protection, and remote shutoff valves. * Multimodal: Alcohol and drug testing in all modes of transportation.


Other responsibilities

A less well-known responsibility of the NTSB is that it serves as a court of appeals for airmen,
aircraft mechanic An aircraft mechanic, aviation mechanic or aircraft maintenance technician (AMT) is a tradesperson who carries out aircraft maintenance and repairs. AMTs inspect and perform or supervise maintenance, repairs and alteration of aircraft and aircr ...
s, certificated aviation-related companies, and mariners who have their licenses suspended or revoked by the FAA or the
Coast Guard A coast guard or coastguard is a Maritime Security Regimes, maritime security organization of a particular country. The term embraces wide range of responsibilities in different countries, from being a heavily armed military force with cust ...
. The NTSB employs administrative law judges who initially hear all appeals, and the administrative law judge's ruling may be appealed to the five-member Board. The Board's determinations may be appealed to the federal court system by the losing party, whether it is the individual or company, on the one hand, or the FAA or the Coast Guard, on the other. However, from '' Ferguson v. NTSB'', the NTSB's determinations are not overturned by the federal courts unless the NTSB abused its discretion or its determination is wholly unsupported by the evidence. The Safety Board maintains a training academy in
Ashburn __NOTOC__ Ashburn may refer to: Places Canada * Ashburn, Ontario United States * Ashburn, Georgia *Ashburn, Chicago, Illinois, a community area ** Ashburn station (Illinois), a Metra station serving the area * Ashburn, Missouri *Ashburn, Virginia ...
,
Virginia Virginia, officially the Commonwealth of Virginia, is a U.S. state, state in the Southeastern United States, Southeastern and Mid-Atlantic (United States), Mid-Atlantic regions of the United States between the East Coast of the United States ...
, where it conducts courses for its employees and professionals in other government agencies, foreign governments or private companies, in areas such as general accident investigation, specific elements of investigations like survival factors or human performance, or related matters like family affairs or
media relations Media relations involves working with media for the purpose of informing the public of an organization's mission, policies and practices in a positive, consistent and credible manner. It can also entail developing symbiotic relationships with medi ...
. The facility houses for training purposes the reconstruction of more than 90 feet of the TWA Flight 800 Boeing 747, which was recovered from the
Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...
after it crashed on July 17, 1996, following a
fuel tank A fuel tank (also called a petrol tank or gas tank) is a safe container for Flammability, flammable fluids, often gasoline or diesel fuel. Though any storage tank for fuel may be so called, the term is typically applied to part of an engine sys ...
explosion. On February 22, 2021, the NTSB announced that the TWA Flight 800 recreation would be decommissioned on July 7, 2021. This decision comes as the lease for the Ashburn training center expires shortly. The NTSB indicated it is moving away from large-scale reconstructions like with TWA Flight 800 and towards using 3D scans to reconstruct accidents. Under an agreement made with the victims' families, when the reconstruction was retained as a training tool, the reconstruction was not allowed to be used as a public exhibit or put on display. For this reason, the NTSB is planning to dismantle and destroy the reconstruction.


See also

*
Aviation safety Aviation safety is the study and practice of managing risks in aviation. This includes preventing aviation accidents and incidents through research, educating air travel personnel, passengers and the general public, as well as the design of airc ...
*
Federal Bureau of Investigation The Federal Bureau of Investigation (FBI) is the domestic Intelligence agency, intelligence and Security agency, security service of the United States and Federal law enforcement in the United States, its principal federal law enforcement ag ...
*
List of pipeline accidents The following is a worldwide list of pipeline accidents. Belgium * 2004: A major natural gas pipeline exploded in Ghislenghien, Belgium near Ath ( southwest of Brussels), killing 24 people and leaving 122 wounded, some critically on July ...
*
Operation Lifesaver Operation Lifesaver is the largest rail safety education organization in the United States. It was founded by the Union Pacific Railroad in the early 1970s. History In 1972, the Idaho State Police, then-Governor Cecil Andrus and the Union Pac ...
* School bus safety *
U.S. Chemical Safety and Hazard Investigation Board The U.S. Chemical Safety and Hazard Investigation Board (USCSB), generally referred to as the Chemical Safety Board (CSB), is an independent U.S. federal agency charged with investigating industrial chemical accidents. Headquartered in Washingto ...
*
Vehicle inspection in the United States In the United States, vehicle safety inspection and motor vehicle emissions, emissions inspection are governed by each U.S. state, state individually. Fourteen states have a periodic (annual or biennial) safety inspection program, while Maryland ...
* Work-related road safety in the United States *
Transportation safety in the United States Transportation safety in the United States encompasses safety of transportation in the United States, including Traffic collision, automobile crashes, Aviation accidents and incidents, airplane crashes, Train wreck, rail crashes, and other m ...


Other countries

* Australia:
Australian Transport Safety Bureau The Australian Transport Safety Bureau (ATSB) is Australia's national transport safety investigator. The ATSB is the federal government body responsible for investigating transport-related accidents and incidents within Australia. It covers ai ...
(ATSB) * Canada:
Transportation Safety Board of Canada The Transportation Safety Board of Canada (TSB, ), officially the Canadian Transportation Accident Investigation and Safety Board () is the agency of the Government of Canada responsible for advancing transportation safety in Canada. It is acc ...
(TSB) * Denmark: Accident Investigation Board Denmark (HCLJ) * European Union: European Network of Civil Aviation Safety Investigation Authorities (ENCASIA) * France:
Bureau of Enquiry and Analysis for Civil Aviation Safety The Bureau of Enquiry and Analysis for Civil Aviation Safety (, BEA) is an agency of the French government, responsible for investigating aviation accidents and incidents and making safety recommendations based on what is learned from those inve ...
(BEA) * Germany:
German Federal Bureau of Aircraft Accident Investigation The German Federal Bureau of Aircraft Accident Investigation
" ''German Federal Bureau of Aircraft Accident Investigation ...
(BFU) * India: Directorate General of Civil Aviation (DGCA) * Indonesia:
National Transportation Safety Committee The National Transportation Safety Committee (NTSC, , KNKT) is an Indonesian government agency charged with the investigation of air, land, rail, and marine transportation safety deficiencies. It has its headquarters on the third floor of the ...
(NTSC) * Italy: National Agency for the Safety of Flight (ANSV) * Japan:
Japan Transport Safety Board The is Japan's authority for establishing transportation safety (excluding related United States Forces Japan). It is a division of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). The agency formed on October 1, 2008 as a ...
(JTSB) * Malaysia: Civil Aviation Authority of Malaysia (CAAM) * New Zealand:
Transport Accident Investigation Commission The Transport Accident Investigation Commission (TAIC, ) is a transport safety body of New Zealand. It has its headquarters on the 7th floor of 10 Brandon Street in Wellington. The agency investigates aviation, marine, and rail accidents and inc ...
(TAIC) * Nigeria:
Nigerian Safety Investigation Bureau The Nigerian Safety Investigation Bureau (NSIB), formerly the Accident Investigation Bureau (AIB), is a federal agency charged with the mandate of promoting transport safety and conducting objective and thorough investigations into transport acciden ...
(NSIB) * Sweden:
Swedish Accident Investigation Authority The Swedish Accident Investigation Authority (, SHK), formerly the Swedish Accident Investigation Board in English, is a Swedish government agency tasked with investigating all types of serious civil or military accidents that can occur on land, ...
(SHK) * Taiwan:
Taiwan Transportation Safety Board The Taiwan Transportation Safety Board (TTSB, ) is an independent government agency of the Republic of China responsible for major transportation accidents on aviation, railways, waterways, and highways in Taiwan. The council is headquartered in ...
(TTSB) * United Kingdom:
Air Accidents Investigation Branch The Air Accidents Investigation Branch (AAIB) investigates civil aircraft accidents and serious incidents within the United Kingdom, its British Overseas Territories, overseas territories and crown dependencies. It is also the Space Accident I ...
(AAIB)


References


External links

*
NTSB Most Wanted ListNational Transportation Safety Board
on
USAspending.gov USAspending.gov is a database of spending by the United States federal government. History Around the time of the Federal Funding Accountability and Transparency Act of 2006's passage, OMB Watch, a government watchdog group, was developing a ...

National Transportation Safety Board
in the
Federal Register The ''Federal Register'' (FR or sometimes Fed. Reg.) is the government gazette, official journal of the federal government of the United States that contains government agency rules, proposed rules, and public notices. It is published every wee ...

Records Management Oversight Inspection Report 2014; National Transportation Safety Board Records Management Program; National Archives and Records Administration; Issued December 19, 2014
* Rimson P.E., Ira J. . International Society of Air Safety Investigators, ISASI '98, Barcelona, Spain; October 20, 1998. {{Authority control Rail accident investigators
United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...
Aviation in the United States Government agencies established in 1967 Independent agencies of the United States government Transport safety organizations Organizations based in Washington, D.C. 1967 establishments in Washington, D.C.