The NTSB is also in charge of investigating cases of hazardous materials releases that occur during transportation.

The NTSB will also on occasion provide technical and other advice to transportation investigative boards in countries that do not have the equipment or specialized technicians available to undertake all aspects of a complex investigation.

The NTSB also determined that " contributing to the decision to take off was a desire to adhere to an overly ambitious itinerary, in part, because of media commitments.

The NTSB also noted that during the previous performance review a supervisor had noted four deficiencies in the controller who ultimately worked the accident aircraft.

Thirty-three years later a similar recommendation was issued by the NTSB ( the CAB Bureau of Safety's successor ) after the TWA Flight 800 Boeing 747 crash on July 17, 1996, with 230 fatalities, which was also determined to have been caused by the explosion of a volatile mixture inside a fuel tank.

Investigations for the NTSB revealed weakness in the spar design, but also pointed out ambiguity in the assembly instructions that made builders unaware of the fact that the wings as supplied in the kits had peel ply panels that needed to be removed before bonding the spar with the wing spar caps.

The NTSB investigation also turned out that the captain was 66 years old which was over the maximum age allowed for operating as captain on this flight.

United States ' National Transportation Safety Board ( NTSB ) and French Bureau d ' Enquêtes et d ' Analyses pour la Sécurité de l ' Aviation Civile ( BEA ) also took part.

The NTSB also found various procedural failures in the dissemination and retrieval of flight safety information, which contributed to the accident.

She also furthered development of the NTSB Academy as an international resource to enhance aviation safety and accident investigations.

The NTSB found this was widespread throughout the industry, prompting a safety recommendation to Exxon and to the industry.

Tests carried out on the vertical stabilizers from the accident aircraft, and from another similar aircraft, found that the strength of the composite material had not been compromised, and the NTSB concluded that the material had failed because it had been stressed beyond its design limit, despite ten previous recorded incidents where A300 tail fins had been stressed beyond their design limitation in which none resulted in the separation of the vertical stabilizer in-flight.

The NTSB found that the crash was the fault of truck driver Ruben Perez.

The National Transportation Safety Board ( NTSB ) investigation found that the crash was a result of a failure in the train's computer-controlled braking system.

Congress, the Federal Bureau of Investigation ( FBI ), and the National Transportation Safety Board ( NTSB ) investigated the crash, and found it to be an accident caused by crew error.

The NTSB found Enbridge knew of a defect in the pipeline five years before it burst.

The NTSB announced they had " not found any major mechanical errors with the school bus ," however did note that the brakes were out of adjustment.

The National Transportation Safety Board ( NTSB ) found that the probable cause of the accident to be the procedures in use at the Los Angeles International Airport control tower provided inadequate redundancy that led to a loss of situational awareness by the local controller.

A subsequent NTSB investigation found the cause of the derailment to be a broken rail within the switch that was the result of an undetected bolt hole fracture.

NTSB reports found human remains in the fan blades of the Number 3 engine, suggesting that some of the victims died almost instantly as they were pulled out of the plane.

An investigation by the NTSB found that the aircraft should have been able to climb on one engine.

Although, when the cockpit was examined, the engine anti-ice switch was found in the ' OFF ' position, further investigations found that even slight pressure could move the switch, and the NTSB ruled this out as a contributing factor in the crash.

When the NTSB, in collaboration with Fokker, investigated the effect ice can have on an aircraft, they found that ice particles as small as 1-2mm of a density of one particle per square centimeter can cause a loss of lift of over 20 %.

The NTSB evaluated the data from the tests and found that the pilot initiated the rotation five knots earlier at 119 knots instead of the proper rotation speed of 124 knots.

The National Transportation Safety Board ( NTSB ) investigation found that, while the bus driver was not aware of the fact that a portion of the bus was on the tracks as she should have been, the timing of signals was so insufficient that, even if she had identified the hazard as the train approached, she would have had to proceed against a red traffic signal into the highway intersection to have moved out of the train's path.

While accident investigators from the National Transportation Safety Board ( NTSB ) traveled to the scene, arriving the following morning, there was much initial speculation that a terrorist attack was the cause of the crash.

Nicholas Stix of Middle American News recounted the mutually contradictory theories that the NTSB had floated immediately following the crash, the statements made by retired fire fighters and police officers who had witnessed the crash, and the history of similar crashes, and concluded that the agency was frantically seeking to calm a public whose faith in commercial aviation had hit rock bottom.

The following NTSB investigation showed that a drain in the road had been blocked for road re-surfacing, and had not been unblocked ; as a result, runoff water penetrated the support hangers.

Rank was criticized by the NTSB for not following the in-flight fire checklist ; opening the fresh air vents instead of leaving them closed, not instructing the passengers to use supplemental oxygen, and not attempting to fight the fire with the hand-held fire extinguisher that was in the cockpit.

Cameron admitted in a press conference following the issuance of the NTSB report that he assumed the problem was a bin fire, a common cause of lavatory fires when smoking was still allowed on flights.

Further from the NTSB report: " There was no flight following or interaction with the Avianca Airlines dispatcher for AVA052 following takeoff from Medellin ... Contributing to the accident was the flight crew's failure to use an airline operational control dispatch system to assist them during the international flight into a high-density airport in poor weather.

As a result of its investigation of this accident, the National Transportation Safety Board ( NTSB ) made the following recommendations, on September 19, 1994, to the 9 groups involved.

In that report, the NTSB determined the following probable cause for the accident :" The aircraft's encounter with adverse winds associated with a very strong thunderstorm located astride the ILS localizer course, which resulted in high descent rate into the non-frangible approach light towers.

The NTSB were unable to determine how much ice had built up on the wings following the second deicing, but considered it to be highly likely that " some contamination occurred in the 35 minutes following the second deicing and that this accumulation led to this accident.

" The NTSB further determined that " contributing to the pilot in command ’ s decision to take off was a desire to adhere to an overly ambitious itinerary, in part, because of media commitments.

This was supported by the NTSB, which determined that the pressure induced by the intense media attention was a " contributing factor " in the accident.

The fact that " three minutes of non-pertinent social conversation " had occurred before take-off was mentioned in the official NTSB report as a contributing factor to the crash.

The National Transportation Safety Board ( NTSB ) is an independent U. S. government investigative agency responsible for civil transportation accident investigation.

When requested, the NTSB will assist the military and foreign governments with accident investigation.

The NTSB was established in 1967 as the federal government's primary accident investigation agency for all modes of transportation – aviation, highway, rail, marine and pipeline.

The NTSB is normally the lead organization in the investigation of a transportation accident within its sphere.

The NTSB has primacy in investigating every civil aviation accident in the United States ( the Federal Aviation Administration is always a party to these investigations, but the NTSB is the investigating agency ).

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.

The NTSB may assist in incident or accident investigations occurring outside the United States under certain circumstances.

NTSB investigation ruled the accident was probably due to low fuel.

The NTSB accident report commended " the exemplary manner in which the flight attendant briefed the passengers and handled the emergency ".

The NTSB in their after accident reported noted, " The performance of the flight attendants during the emergency was exceptional and probably contributed to the success of the emergency evacuation.

The NTSB concluded that the probable cause of the accident was Reid's " improper decision to take off into deteriorating weather conditions ( including turbulence, gusty winds, and an advancing thunderstorm and associated precipitation ) when the airplane was overweight and when the density altitude was higher than he was accustomed to, resulting in a stall caused by failure to maintain airspeed.

The NTSB has since finished its investigation of the accident.

The official NTSB accident report lists the probable cause as " The pilot's intentional flight into the ground for the purpose of suicide while impaired by alcohol.

The NTSB never determined the cause of the accident and the resort sold the airline.

The NTSB report showed that the plane had several instances of maintenance work related to cabin pressure in the months leading up to the accident.

* NTSB accident report of the helicopter accident in 1977

The NTSB attributed the accident to lack of the ability to detect microbursts aboard aircraft-the radar equipment aboard aircraft at the time was unable to detect wind changes, only thunderstorms.

Three years after the accident the NTSB was compelled to re-open the investigation into the crash, after submissions were received that the person who was suspected of driving the " unauthorized vehicle " had actually left the airport about fifteen minutes before the aircraft crashed.

According to the National Transportation Safety Board ( NTSB ) accident report, they learned that the winds were changing direction and that a wind shear alert had sounded on the airport due to a thunderstorm nearby.