1. Introduction It is very difficult, when an accident occurs during a flight to determine precisely what happened for several reasons: Most of the time, during a flight, an aircraft is not in an environment where people cannot testimony what they saw (over water, high in the sky …) When the aircraft crashes, it is often in an area difficult to access (open sea, on a mountain, …) When the aircraft is ready to be examined, after being recovered from a difficult crash area or after a potential fire has been extinguished, the pieces are frequently severely damaged. To be able to retrace what happened during the last moments of the flight of the aircraft, before an accident or incident, a flight recorder has been developed. The information collected by this flight recorder can help the investigation teams to understand what happened even when the aircraft is badly damaged or even impossible to use to find answers. But developing a flight recorder is not simple precisely because it has to withstand a severe accident. When an extreme fire starts after a crash for example, the flight recorder has to stay in good conditions until it is recovered by someone on the crash site. Therefore, regulations, certifications and standards have been made to ensure that this element in the aircraft has all the required properties. Nowadays, the flight recorder has an increasing role to play in investigations of accidents because of the number of passengers that can be carried on a
Multiple factors were contributing to American Airlines fatal accident in 1999. To identify the factors and different issues with American Airlines Flight 1420 the SHELL model will be used. One of the major cause of this accident was a breakdown in Liveware-Software. Liveware-Software investigates procedures, manuals, checklists and standard operational procedures (ICAO SHELL Model, 2016).
First, Flight 800 was a plane that exploded killing all 230 people, they don’t know what made it explode. “On 17 July, 1996 Trans World Airlines flight 800 exploded off long Island. Killing all 230 people on the plane”(Girard, pg.1) Divers spent over 10 months finding 20,000 pieces of the plane and finding the passengers(Schmitz. pg.2). They were able to put
The location of the rupture on the plane was a section of fuselage skin about sixty (60)
On June 1st, 1999 American Airlines flight 1420 experienced a tragic accident that claimed many lives and made an impact on aviation worldwide. The event and it subsequent investigation shed
As we grew older, we might have taken a few flights and our curiosity was extinguished by examining the parts of the plane that we can plainly see, and yet, there's this one aircraft component that we're still itching to see and know more about.
On March 5th 1966 at approximately 1:30 PM a Boeing 707 operated by British Airways encountered a spell of severe cleat air turbulence and subsequently broke apart. The breakup occurred during a flight from Tokyo to Hong Kong. Shortly after departure, as the aircraft was nearing Mount Fuji at an altitude well above the top of the mountain the Boeing 707 encountered very strong winds that caused the aircraft to break apart and crash,
Airplanes make traveling long distances extremely convenient. Whereas a cross country trip via car can take days upon days to complete, an airplane trip is much faster. With so many people turning to air travel for even short distances, the likelihood that accidents will occur is only
As a result, a thorough investigation into this international tragedy ensued. In order for investigators to create a timeline of events, they needed to collect as much from the wreckage and surrounding areas as they could. The trail of the wreckage spread over a thousand square miles, from Lockerbie up to the coast (Ushynskyi, 2009). Overall a total of 4 million pieces of fragments were collected and investigators were able to piece 90% of the aircraft back together (Owen, 2009). Medical examiners found the victims suffered from extreme lung damage to the decompression in the aircraft. What had investigators puzzled was the lack of distress calls from the pilots, the normalcy in the flight data, and the lack of engine corrosion or distress following inspection (Owen,
It was determined that ballistic trajectory analysis was the next method to try and solve the mystery. Ballistic trajectory analysis is a computer program that uses factors of the atmosphere and the plane to trace where each object landed. This system is based on the fact that the part that breaks off first will land in the water first. The engineers used the GPS locations of each of the pieces along with the weight, speed, direction, ocean currents, and wind to determine which part of the plane broke off and therefore landed first. After performing this analysis, it was concluded that the tail end of the plane broke off first, and after they discovered this, the focus of the investigation focused to the tail. Then one day while scanning over the wreckage pieces, metallurgist Frank Zakar noticed a certain piece that had a different looking crack than all of the other pieces. When an airplane breaks in midair, many smaller pieces break off just because of the sudden force of the air acting on it, this is called an overload fracture. Overload fractures break at an angle, and up to this point all the pieces of metal that had been found had this characteristic. The new piece that was found did not have this type of character at all. The engineers examined this piece and found that it had very smooth cracking, very typical of metal fatigue. Metal
American Airlines flight 1420 was bound for Arkansas on June 1, 1999. It was the last flight of a three leg route. The plane touched down the runway and struck several tubes, passed through a chain link security fence and went over an embankment. There were several key factors that played a role in the accident that left the captain and 10 passengers’ dead and injured over 105 other passengers. The impact alone caused a fire and destroyed
Team Members: Seran Karikalan 1002764 Sivaguru S/O Sivagnanam 1003260 Ng Aiting 1067138 DARE 3B 24
Official observations find a probable cause of this accident to be the insufficiencies of flight crew to properly monitor flight instruments
One of the most scrutinized pieces of evidence gathered from an aircraft accident is the collection of information contained in the Cockpit Voice Recorder and Flight Data Recorder. CVRs and FDRs paint an often haunting, but frequently useful picture of what occurred during the last minutes of an accident flight. This is not to say, however, that the recorders are always conclusive, or even useful. There are a handful of cases where the CVR and FDR tapes have broken, failed to record, stopped recording early, or not captured enough information to be useful to the investigation. Advancements in these devices are not new to the industry; however, the pace is slow to incorporate new technology into current fleets.
One of the most scrutinized pieces of evidence gathered from an aircraft accident is the collection of information contained in the Cockpit Voice Recorder and Flight Data Recorder. CVRs and FDRs paint an often haunting, but frequently useful picture of what occurred during the last minutes of an accident flight. This is not to say, however, that the recorders are always conclusive, or even useful. There are a handful of cases where the CVR and FDR tapes have broken, failed to record, stopped recording early, or not captured enough information to be useful to the investigation. Advancements in these devices are not new to the industry; however, the pace is slow to incorporate new technology into current fleets.
According to the U.K. Courts it is important to relate an accident to a specific flight, when cases about embarking or disembarking are being solved. It is also important to consider the passenger’s location and if the passenger was about to enter or was actually entering the airplane it would create an article 17 accident. In case an accident occurred elsewhere in the terminal, a consideration have to made whether the passenger was required to be there by the carrier.