quarta-feira, 14 de julho de 2010

Airbus 330 - Toilet and Galley under Ventilation FAULT - Limited Flight Time

TOILET SYSTEM


Differential pressure forces waste from toilet bowls into 2 waste storage tanks. On ground, and at altitudes below 16000 feet, a vacuum generator produces the necessary pressure differential.

Clear water from the potable water system flushes the toilets.

A flush control unit in each toilet controls the flush sequence.

The Vacuum System Controller (VSC) furnishes operational information (including the waste level in the storage tank) to the flight attendant's panel, and maintenance information and a test program to the centralized maintenance system.

The waste tank has a total capacity of 700 liters (or 1050 liters if 3 tanks).

Ground personnel services the waste tank through a single service panel under the fuselage.

A manual shut-off valve on the lower right-hand side of the toilet bowl isolates an inoperative toilet.

ARCHITECTURE


The water and waste system :


- distributes potable water to the toilets and the galleys.
- disposes waste water.stores toilet wastes.

The system is insulated to prevent water leaks and ice build up.
The water and waste control panel is located at the forward cabin attendant's panel.
Potable water is stored in two (or three ) 350-liters tanks in the side walls of the aft cargo compartment.

While airborne, the aircraft uses bleed air to pressurize the water system ; on the ground it uses air from the service panel pressure port.

If no bleed air is available, an electrical compressor () starts automatically when air pressure is not sufficient for normal operation of potable water system.

Potable water is piped to the galleys and lavatories. Manual shut-off-valves isolate the washbasin and toilet from the water system. These valves, easily identifiable by OPEN and SHUT legends, are behind an access door under the toilet bowl (on washbasin side). A placard inside the access door gives instructions on this valve operation.

The system can be filled or drained from the service panel at the bottom of the fuselage.

For filling, the quantity is preselected on the forward attendant's panel.

Indicators on the forward attendants panel show how much water the water tanks contain.

Wastewater from the galleys and from the sinks in the lavatories drains overboard through two anti-iced drain masts.

The forward mast drains wastewater from the forward cabin ; the aft mast drains it from the aft cabin.

Differential pressure discharges the wastewater in flight, and gravity does so on the ground.



segunda-feira, 5 de julho de 2010

Ryanair Wants Passengers to STAND UP During Flights


O diretor executivo Michael O'Leary já entrou em contato com a fábrica Boeing solicitando um novo projeto de aeronave com setor para passageiros viajarem em pé.

Se a idéia conseguir aprovação da Autoridade de Aviação Civil Irlandêsa, a empresa planeja adicionar novos ou adaptados jatos à sua frota existente.
A Ryanair calcula que seria capaz de "empacotar para embarque" 30% a mais de passageiros e que os custos seriam cortados em torno de 20%.

Esta empresa anunciou no último mês, plano para fazer seus passageiros carregarem todas suas próprias bagagens até os aviões. Deixarão as bagagens ao lado do avião e levarão consigo apenas pequena bagage de mão.

Despachar uma mala através do serviço de chck-in custará R$ 214,00 durante o verão.

Desde Outubro/2009, a empresa irlandesa já está abolindo recursos convencionais de check-in, forçando todos passageiros a fazerem check-in antecipado online.
É alegado que tal procedimento poupará para Ryanair quase R$ 70 milhões por ano.
Ela ainda tem planejado colocar coletores de moedas nos toaletes das aeronaves. O uso dos toaletes será pago.

Exigências regulatórias, incluindo assentos capazes de suportar uma força de 16 vezes aa gravidade, priva muito tal arranjo de assentos.

A Boeing que supre a frota da Ryanair com 273 Boeings 737-800, disse:



"Nós não estamos considerando acomodações somente para passageiros em pé".
O porta-voz da Ryanair, Stephen McNamara disse:


"A Boeing pode colocar um homem na Lua, então eu estou seguro de que eles são capazes de fazer disso, um sucesso. Os assentos são mais leves e a área de colocação dos pés [pegada] em carbono, será menor.

A Ryanair tem planejado remover 2 lavatórios na parte traseira das aeronaves e assim acomodará mais 50 passeiros em cada voo.

A 'STAND UP Class' será acomodada na parte traseira de 250 aviões dos quais serão retiradas 10 fileiras de assentos e substituidas por 15 fileiras dos chamados 'assentos verticais'.


Antes de 1988, assentos de aeronaves eram projetados para se rem sujeitados a exigências de força estática de 9G. Não havia critério de lesão do ocupante e pouca importância era dada à atenuação da energia no assento.


Atualmente são feitos testes de condição dinâmica da mudança da Velocidade Vertical/Longitudinal combinadas.
O propósito deste teste é avaliar a integridade estrutural e ferimento espinhal para carga vertical numa condição de pouso em emergência quando o predominante impacto é ao longo da coluna vertebral de um ocupante do assento.

Nos testes de condição dinâmica de Velocidade Longitudinal, na condição 2, o próposito deste teste é calcular a integridade estrutural do sistema de assento, limitações do sistema, segurança do ocupante e deformações do assento para uma carga horizontal no caso de pouso em emergência.

Critério de Lesão ao Ocupante
- HIC (=Head Injury Criteria) é um medida que assegura que o ocupante permanecerá consciente em seguida a um acidente. Em qualquer circunstância se o ocupante ou a cabeça do ATD for exposta ao impacto com os materiais interiores como, estruturas de assento, estrutura da aeronave durante o teste, o ocupante HIC não deve ser excedido de 1000 ou se o contato ocorrer, proteção deve ser fornecida tal que o impacto da cabeça não exceda o HIC de 1000.


- A carga máxima de compressão medida entre a pelvis e a coluna lombar do ATD não exceda 1500 libras (6.67 kN).
- Em caso de limitações do torso são usadas, cargas de tensão em tiras (cintos) a não exceder 1750 libras (7.78 kN).
- Se tiras duplas forem usadas para limitação do torso superior, a carga total de tensão das tiras não excedam 2000 libras (8.90kN).
- As tiras de limitação do torso superior permanecem no ombro do ATD (=Anthropomorphic Test Divice) durante o teste inteiro.
- A limitação pévica permanece na pelvis do ATD durante o teste inteiro.
- Onde o contato da perna com o assento ou assentos, com material ocorre, a carga de compressão axial em cada fêmus não exceda 2250 libras (10kN).
- Os cintos não devem ser cortados ou rasgados por materiais do assento ou pela fivela ajustadora do mecanismo do cinto. Se acontecer, deve ser investigada a causa e ação corretiva apropriada tomada.


Conforto e Ergonomia


Conforto pode ser definido como um estado de estar relaxado e não sentido qualquer dor.


Em termos biomecânicos, conforto é relacionado aos seguintes fenômenos:
- o STRESS postural biomecânico agindo no corpo enquanto sentado, ou
- a restrição da circulação sanguínea nas regiões periféricas comprimidas, ou
- a resposta sensorial à compressão tecidual.


Em geral, um programa de certificação de um novo assento para aeronave consiste de 32 a 40 testes de certificações nos assentos de passaeiros incluindo assentos com face para frente da aeronave, para traseira e laterais. Isto leva cerca de 26 a 40 semanas e segue um custo anexo ao programa total de aproximadamente:
- custo engenheiro = US$ 400.000
- artigos de teste (40 minutos) = US$ 400.000
- teste dinâmico = US$ 120.000
- parte fixa do assento = US$ 20.000
- overheads = US$ 60.000


TOTAL = 1.000.000,00


sexta-feira, 2 de julho de 2010

Taxi and Ground Movement Operations - Changes

Taxi and Ground Movement Operations



"Never cross a hold line without explicit ATC instructions. If in doubt, ASK! You may not enter a runway unless you have been: instructed to cross that specific runway; cleared to take off from that runway; or instructed to position and hold on that specific runway."


 JUN 30th, 2010  from now on



This change establishes the requirement that an explicit runway crossing clearance be issued for each runway (active/inactive or closed) crossing and requires an aircraft/vehicle to have crossed the previous runway before another runway crossing clearance may be issued. At airports where the taxi route between runway centerlines is less than 1,000 feet apart, multiple runway crossings may be issued after receiving approval by the Terminal Services Director of Operations.




Change FAA Order JO 7110.65, paragraph 3-7-2, to read as follows:


3-7-2. TAXI AND GROUND MOVEMENT OPERATIONS


Issue the route for the aircraft/vehicle to follow on the movement area in concise and easy to understand
terms. The taxi clearance must include the specific route to follow. When a taxi clearance to a runway is
issued to an aircraft, confirm the aircraft has the correct runway assignment.



You must stop and wait for crossing RWY 31 at the intersection DELTA, even if you have received clearance for entire taxi trajectory to RWY 36.


NOTE-
1. A pilot's read back of taxi instructions with the runway assignment can be considered confirmation of runway assignment.


2. Movement of aircraft/vehicles on nonmovement areas is the responsibility of the pilot, the aircraft operator, or the airport management.


a. When authorizing an aircraft/vehicle to proceed on the movement area, or to any point other than assigned takeoff runway, specify the route/taxi instructions. If it is the intent to hold the aircraft/vehicle short of any given point along the taxi route, issue the route and then state the holding instructions.


NOTE-
1. The absence of holding instructions authorizes an aircraft/vehicle to cross all taxiways that intersect the taxi route.


2. Movement of aircraft/vehicles on non-movement areas is the responsibility of the pilot, the aircraft operator, or the airport management


Phraseology, no change.


EXAMPLE-
“Cross Runway Two Eight Left, hold short of Runway Two Eight Right.”
“Taxi/continue taxiing/proceed to the hangar.”
“Taxi/continue taxiing/proceed straight ahead then via ramp to the hangar.”
“Taxi/continue taxiing/proceed on Taxiway Charlie, hold short of Runway Two Seven.”
or
“Taxi/continue taxing/proceed on Charlie, hold short of Runway Two Seven.”


b. When authorizing an aircraft to taxi to an assigned takeoff runway, state the departure runway followed by the specific taxi route. Issue hold short restrictions when an aircraft will be required to hold short of a runway or other points along the taxi route.


PHRASEOLOGY-
“Runway (number) taxi via (route as necessary).”
or
“Runway (number) taxi via (route as necessary)(hold short instructions as necessary).”


EXAMPLE-
“Runway Three Six Left, taxi via taxiway Alpha, hold short of taxiway Charlie.”
or
“Runway Three Six Left, taxi via Alpha, hold short of Charlie.”
or
“Runway Three Six Left, taxi via taxiway Alpha, hold short of Runway Two Seven Right.”
or
“Runway Three Six Left, taxi via Charlie, cross Runway Two Seven Left, hold short of Runway Two Seven Right.”
or
“Runway Three Six Left, taxi via Alpha, Charlie, cross Runway One Zero.”


c. Aircraft/vehicles must receive a clearance for each runway their route crosses. An aircraft/vehicle must have crossed a previous runway before another runway crossing clearance may be issued.


NOTE
A clearance is required for aircraft/vehicles to operate on any active, inactive, or closed runway(s) except for vehicles operating on closed runways in accordance with a Letter of Agreement (LOA).


EXAMPLE-
“Cross Runway One Six Left, hold short of Runway One Six Right.”


d. When an aircraft/vehicle is instructed to “follow” traffic and requires a runway crossing, issue a runway crossing clearance in addition to the follow instructions and/or hold short instructions, as applicable.


EXAMPLE-
“Follow (traffic), cross Runway Two Seven Right.”
or
“Follow (traffic), cross Runway Two Seven Right, hold short Runway Two Seven Left.”


e. At those airports where the taxi distance between runway centerlines is less than 1,000 feet, multiple runway crossings may be issued with a single clearance. The air traffic manager must submit a request to the appropriate Terminal Services Director of Operations for approval before authorizing multiple runway crossings.


REFERENCE FAA
OJO 7210.3, Para 10-3-10 MULTIPLE RUNWAY CROSSINGS

quinta-feira, 1 de julho de 2010

A Dream Come True by FAA - Transition Authorized - A Special Exemption


TRANSITION
Performance
Cruise: 100 kts (115 mph)
Rotate: 70 kts (80 mph)
Stall: 45 kts (51 mph)
Range: 400nm (460 mi)
Takeoff over 50’ obstacle: 1700’
Fuel burn: 5 gph
Fuel tank: 20 gallons
Useful Load: 430 lbs
On road: 30 mpg, 65 mph
Light Sport Aircraft (LSA)


Folded:
                                                                          6’ 9” tall
6’ 8” wide
18’ 9” long

Dimensions
Cockpit:
51” at the shoulder
Airplane:
6’ 3” tall
27’ 6” wide
19’ 2” long




Training
Become a Sport Pilot in as little as 20 hours of flight time in a Transition®-specific course.
For existing pilots, get comfortable quickly with the familiarization training included with every Transition® delivery.


Anticipated purchase price: $194,000.

terça-feira, 29 de junho de 2010

Pilots - Your MEDICAL Information - Security and Privacy - Are at Risk




A Transportation Department Inspector General (IG) report dated June 18 found "serious security lapses" in systems that the FAA uses to store pilots' personal information, including medical data. Information collected from roughly 465,000 current medical certifications is just the tip of the iceberg. The IG says the FAA's Internet-accessible Medical Support System (MSS) holds records for more than three million airmen, past and present. The IG listed names, addresses, Social Security numbers and other "personally identifiable information" as information "not properly secured." According to the report, the system's vulnerabilities allow for the "potential falsification of medical certificates," and more. "Failure to encrypt sensitive personal identifiable information and control remote access to MSS," says the report, "places airmen at unnecessary risk of identity theft, jeopardizes the integrity of the medical certification process, and increases risks of attacks on departmental networks." The FAA is responding and the IG believes the FAA's current and planned actions will positively address the IG's concerns in most cases.

FAA requires airmen to hold a medical certification of their medical and mental fitness to operate aircraft. 1

This review was requested by the Chairmen of the House Committee on Transportation and Infrastructure and its Subcommittee on Aviation. The objectives of our audit were to (1) determine if airmen’s personally identifiable information (PII) is properly secured from unauthorized use or access, and (2) assess FAA’s progress in establishing mechanisms to identify airmen holding current medical certificates while receiving disability pay. MSS currently stores more than 18 million medical records supporting the medical assessment of over three (3) million airmen. To ensure aviation safety and protect the privacy of airmen, it is critical that this medical information be secure. Also, coordination with other Federal agencies may improve aviation safety by identifying airmen who are receiving disability benefits and may not have disclosed potentially disqualifying medical conditions.

1 A medical certificate must be held when exercising any of the following privileges: airline transport pilot, commercial pilot, private pilot, recreational pilot, flight instructor, flight engineer, flight navigator, or student pilot. Except for a person employed by FAA, a branch of the military services or the Coast Guard, a person acting as an air traffic control tower operator must also hold a medical certificate.

RESULTS IN BRIEF

The names, addresses, Social Security numbers, medical data, and other PII of airmen are not properly secured to prevent unauthorized access and use. We found serious security lapses in FAA’s management of AMEs private medical support staff access to the system. For example, medical examiners’ former staff continued to have access to MSS. At the same time, FAA has not fully implemented security controls required by the Office of Management and Budget (OMB) and the Department to protect PII, such as multi-factor user authentication, audit trail reports to detect inappropriate access, and data encryption. In addition, FAA has not ensured secure configuration of MSS computers in accordance with the Department’s baseline standards to reduce the risk of unauthorized access and corruption. Specifically, we found vulnerabilities on MSS computers, such as configuration allowing intruders to install malicious codes on FAA user computers. Inadequate contingency planning also threatens the service continuity of MSS. Combined, these weaknesses make airmen’s PII vulnerable to unauthorized access and use and potential falsification of medical certificates that could lead to unfit airmen being medically certified to fly. During the course of our review, FAA took immediate action to enhance security protection by working with doctors to remove thousands of separated medical staff's access to MSS and retracting millions of PII records from the contractor’s site. However, additional improvements are needed to adequately secure PII data from unauthorized use.

FAA has made limited progress in identifying airmen who receive disability benefits while holding medical certificates. While FAA has a draft matching agreement with the Social Security Administration (SSA) to reconcile data in MSS and SSA’s disability benefits system, it has yet to establish a target date for completing the interface. Further, FAA has yet to coordinate with other benefits providers, such as the Department of Veterans Affairs and the Department of Labor. FAA continues to rely on airmen to disclose potentially disqualifying conditions when applying for medical certificates. FAA recently announced a onetime, limited opportunity for airmen to reveal previously undisclosed depression and use of antidepressant medications without being subject to FAA.

2 This step, however, does not take the place of a comprehensive approach to undisclosed medical conditions. Accordingly, FAA needs to expedite computer matching agreements with disability benefits providers, implement the checks under those agreements, and take appropriate enforcement action where falsifications are found.

To assist FAA, we are making a series of recommendations to strengthen the confidentiality, integrity, and availability of airmen PII and to ensure unqualified airmen do not receive a medical certification enabling them to fly.

BACKGROUND

MSS contains over 18 million medical records on more than 3 million airmen, of which over 465,000 have current medical certifications.3

In 2007, the Inspector General testified before the House Committee on Transportation and Infrastructure that some airmen failed to disclose to FAA any medically disqualifying information on their applications for medical certificates. Further, some airmen held current medical certificates while simultaneously receiving disability benefits for medically disabling conditions. In addition to medical information, the system contains other sensitive personal information, such as name, address, date of birth, and Social Security number of airmen. MSS is accessible to about 9,000 users, 8,500 of whom are AME––private physicians who function as FAA designees—or their staff, who enter the medical data into the MSS Web site on the Internet. AMEs and their staff have access to all information (including medical data) stored in MSS on airmen examined in their offices. In addition, they can access the name, address, date of birth, and partial Social Security number on all airmen examined by other AMEs and stored in MSS. Almost 300 AMEs reside in 89 foreign countries and conduct exams on airmen seeking to fly in the United States.

2 75 Fed. Reg. 17049 (April 5, 2010). Our testimony suggested that FAA work with the SSA and other disability benefits providers to expeditiously develop and implement a strategy to check for and take appropriate certificate regulatory enforcement action where falsifications are found, and to consider revising its application for the medical certificate to require applicants to explicitly identify whether they are receiving medical disability benefits.


3 FAA’s Civil Aerospace Medical Institute in Oklahoma City processes medical certificate applications in MSS.


4 Falsification of FAA Airman Medical Certificate Applications by Disability Recipients (CC-2007-063, July 17, 2007). OIG reports and testimony can be found on our Web page: www.oig.dot.gov.


SENSITIVE AIRMAN MEDICAL RECORDS ARE NOT PROPERLY SECURED FROM UNAUTHORIZED USE

DOT policy requires FAA to implement controls for removing medical record access rights when they are no longer required, to ensure user access is derived from a role-based validation process and each user’s level of access is commensurate with a need to know, and to document all users who have access to sensitive data.5

Medical Staff and Contractor Access Continued Despite A Need To Know However, such controls have not been implemented in MSS. At the same time, FAA has not implemented OMB guidance to secure PII in an automated information system or to properly configure MSS production and development computers to reduce the risk of tampering.

In addition, FAA had been sending millions of airman medical records from the MSS database to its contractor’s facilities, a practice that has been in place over the past decade. FAA’s contractor has been using this live data in its system testing procedures, but FAA had not justified the contractor’s need for using millions of live records—or considered the security implications of storing airman

5 DOT Information Technology and Information Assurance Policy Number 2006-22 – October 11, 2006 (revision 1): Implementation of DOT’s Protection of Sensitive Personally Identifiable Information (SPII).

PII at the contractor facility. After we requested documentation of support and approval of the data transference, FAA concluded there was no business need to maintain the data at the contractor’s site. Millions of PII records were purged from the contractor’s site.

The control weaknesses we identified are largely the result of FAA’s failure to provide adequate oversight of the contract by communicating the DOT requirements regarding access controls. Upon learning of these control weaknesses, we notified FAA, which responded in June 2009 (see Appendix A), stating that it had begun implementing corrective actions, such as working with doctors to remove access for separated medical staff. In addition, FAA purged millions of PII records from the contractor’s site. However, the lack of documentation about the application security features such as definitions of users’ ability to access data and perform critical functions continues to weaken FAA’s ability to administer effective security.

quinta-feira, 17 de junho de 2010

Turkish Airlines Flight 1951 B737-800 Accident

Turkish Air Lines Flight TK1951

Clicar no link abaixo para ver o video da animação com audio em inglês.

http://www.youtube.com/watch?v=zR6YPFIeemE&feature=player_embedded

Transcrição do audio para português:
Atenção! Há inclusão de explicações detalhadas para leigos em aviação.

"Turkish Air Lines Flight TK1951, partiu de Istambul aos 25 minutos após as 8 horas da manhã do dia 25 FEV 2010. Primeiro voo para Armsterdam.


Um quarto de hora após as 10 horas, [10:15], a aeronave entra no espaço aéreo Deutch vindo de Este na aproximação para o aeroporto Schiphol. [Holanda]






Devido a uma falha, o Rádio Altímetro do lado esquerdo, um dos dois a bordo, indicava altitude incorreta de -8 pés. [menos 8 pés, embora a aeronave ainda estivesse passando na altitude de 7900 pés na descida AUTORIZADA para 4000 pés].




Neste caso enquanto a aeronave está descendo para o Nível de Voo 4000 [pés] e subsequentemente para 2000 pés, a altura incorreta no Rádio [Altímetro] causa 5 audíveis alertas completos,   serem ouvidos na cockpit.

Biiiiiiiiiip!

O piloto notou estes alarmas.

Havia 3 pilotos na cockpit: o co-piloto, o qual estava voando a aeronave, está sentado à direita. Ele está recebendo do comandante, também instrutor, treinamento em rota, sentado no assento esquerdo.


O Primeiro Oficial atuando como Safety-Pilot, está sentado no assento do observador, localizado no centro e atrás deles.


A aeronave está agora voando 2000 pés no curso 265 graus como designado pelo Controle de Tráfego Aéreo. O Controle de Tráfego Aéreo determinou uma nova proa, 210 graus, em ordem para interceptar, o que é referido como Localizador antes do pouso na pista 18 da Direita. ***Localizador = projeção eletrônica do Eixo da Pista de pouso



A proa determinada resulta na interceptação do Localizador, 5.5 milhas náuticas antes da cabeceira da pista.


Um alinhamento curto seria esperado para um procedimento normal, o qual alinharia a aeronave no mínimo de 8 milhas náuticas da cabeceira da pista e na Rampa Eletrônica de Planeio. ***Glide Slope = Rampa Eletrônica de Planeio


A consequência foi que, o segmento de aproximação final foi mais curto. Nenhuma autorização para descida adicional para a Rampa Eletrônica de Planeio foi emitida, tal que a Rampa Eletrônica de Planeio para pouso na pista, agora seria interceptada de cima. ***O correto e usual, é a interceptação ser feita por baixo da Rampa.




Ruido característico do abaixamento do Trem de pouso.

Quando a aeronave intercepta o Localizador [ voando acima da rampa], as manetes de potência devem ser fechadas[reduzidas], para permitir a aeronave descer para a Rampa Eletrônica de Planeio [Glide Slope].
Devido à medição rigorosa incorreta pelo Rádio Altímetro esquerdo, o [sistema] AutoThrottle prematuramente muda para o modo de voo RETARD. Este modo é usualmente ativado na fase final durante o voo, em ordem para reduzir a velocidade quando acima da pista de pouso. O efeito imediato, todavia, é o mesmo que quando o sistema está funcionando corretamente. As manetes de potência fecham [são reduzidas para idle].
Interceptação da Rampa Eletrônica de Planeio, [descendo] de cima [dela], mascara a falha de operação do AutoThrottle [sistema automático de aplicação de potência dos motores]. Na altitude de 5000 pés, a Rampa Eletrônica de Planeio é interceptada. Neste ponto, a velocidade da aeronave está ainda acima da velocidade de pouso, 144 Knots. Quando a altitude determinada de 1000 pés for passada, a aeronave e tripulação deve estar totalmente preparada para o pouso de acordo com os procedimentos da companhia Turkish Linhas Aéreas. Isto, todavia, não é o caso. Ruido característico de abaixamento dos Flaps.



A velocidade permanece muito alta e a potência do motor muito baixa. Na posição final dos Flaps, o Pilot-Not-Flying permanece ainda engajado na [leitura] da lista de verificação para pouso [checklist]. Isto pode ter causado a velocidade diminuir no anúncio. O Piloto Automático mantém a aeronave na Rampa Eletrônica de Planeio. Em ordem para gerar suficiente sustentação, o nariz eleva-se muito bem acima do nível normal, o piloto não se conscientiza disto.





Quando a velocidade reduziu para 109 Knots, o Stick Shaker foi ativado.[vibração severa da coluna do manche]. Ruido característico do Stick Shaker atuando. É o som parecido com uma rajada longa e rápida de metralhadora.


Um aviso que a aeronave estava voando muito lentamente, e em risco de perder toda sustentação muito rapidamente. O piloto respondeu a isto,[empurra as manetes de potência para frente], mas inadequadamente [empurrou só parcialmente], [a potência é reduzida novamente], a aeronave sofre o acidente.

Nos segundos finais do Gravador de Dados de Voo [FDR], ele pode ser visto que, logo que o Stick Shaker foi ativado, o co-piloto desliza as manetes de potência totalmente para frente, e empurra a coluna de controle [manche], para baixar o nariz da aeronave. O comandante assumiu o controle, mas o  AutoThrottle não está DESATIVADO, o que significa que ele quase imediatamente  fecha [reduziu] a potência [dos motores] novamente. O AutoThrottle e o Piloto Automático, são então DESATIVADOS. Sete segundos depois, potência total é aplicada, mas neste ponto há insuficiente altura restante para recuperar do STALL [perda total de sustentação]. A aeronave acidenta-se num terreno localizado 1 milha da pista. Devido a posição elevada do nariz, a cauda atinge o solo primeiro, e a aeronave parte-se em 3 pedaços.