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Balance weight was missing
A post-flight inspection revealed that half of one of the balance weights from the right elevator spring tab was missing, along with two nuts that secured the balance weight. The report said that the two bolts associated with the nuts had “migrated out of the remaining half weight and jammed on the top surface of the elevator”; as a result, the elevator spring tab was held in the trailing-edge-down position.
The report said that the Dash 8 pitch-control system comprises “two elevator-control-cable circuits, each operating an independently mounted, spring-tab-assisted elevator. Each elevator has a spring tab at the inboard end and a trim tab at the outboard end.
“The left elevator is actuated by the captain’s control column through the left cable-control circuit and the left elevator spring-tab system. The right elevator is actuated by the first officer’s control column through similar components.”
The two control columns normally are interconnected to allow for simultaneous movements of both elevators.
In the event that one of the controllable circuits jams, the control columns can be disconnected by the elevator-pitchdisconnect system to allow the unjammed circuit to operate normally.
Spring tabs provide ‘aerodynamic assistance’
The report said that the spring-tab system is “designed to provide aerodynamic assistance to elevator movement. There are two mass balances extending forward of each spring-tab leading edge. Each mass balance assembly consists of two weights bolted together and secured to the arm with two bolts.
Flight Safety Foundation. In: Aviation Mechanics Bulletin (adapted).
Based on the text, judge the item below.
The Dash 8 pitch-control system consists of two elevatorcontrol-cable circuits both operating a single elevator.
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This text refers to item
Balance weight was missing
A post-flight inspection revealed that half of one of the balance weights from the right elevator spring tab was missing, along with two nuts that secured the balance weight. The report said that the two bolts associated with the nuts had “migrated out of the remaining half weight and jammed on the top surface of the elevator”; as a result, the elevator spring tab was held in the trailing-edge-down position.
The report said that the Dash 8 pitch-control system comprises “two elevator-control-cable circuits, each operating an independently mounted, spring-tab-assisted elevator. Each elevator has a spring tab at the inboard end and a trim tab at the outboard end.
“The left elevator is actuated by the captain’s control column through the left cable-control circuit and the left elevator spring-tab system. The right elevator is actuated by the first officer’s control column through similar components.”
The two control columns normally are interconnected to allow for simultaneous movements of both elevators.
In the event that one of the controllable circuits jams, the control columns can be disconnected by the elevator-pitchdisconnect system to allow the unjammed circuit to operate normally.
Spring tabs provide ‘aerodynamic assistance’
The report said that the spring-tab system is “designed to provide aerodynamic assistance to elevator movement. There are two mass balances extending forward of each spring-tab leading edge. Each mass balance assembly consists of two weights bolted together and secured to the arm with two bolts.
Flight Safety Foundation. In: Aviation Mechanics Bulletin (adapted).
Based on the text, judge the item below.
Two bolts and nuts went up and were packed to the upper part of the lift.
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This text refers to item
Balance weight was missing
A post-flight inspection revealed that half of one of the balance weights from the right elevator spring tab was missing, along with two nuts that secured the balance weight. The report said that the two bolts associated with the nuts had “migrated out of the remaining half weight and jammed on the top surface of the elevator”; as a result, the elevator spring tab was held in the trailing-edge-down position.
The report said that the Dash 8 pitch-control system comprises “two elevator-control-cable circuits, each operating an independently mounted, spring-tab-assisted elevator. Each elevator has a spring tab at the inboard end and a trim tab at the outboard end.
“The left elevator is actuated by the captain’s control column through the left cable-control circuit and the left elevator spring-tab system. The right elevator is actuated by the first officer’s control column through similar components.”
The two control columns normally are interconnected to allow for simultaneous movements of both elevators.
In the event that one of the controllable circuits jams, the control columns can be disconnected by the elevator-pitchdisconnect system to allow the unjammed circuit to operate normally.
Spring tabs provide ‘aerodynamic assistance’
The report said that the spring-tab system is “designed to provide aerodynamic assistance to elevator movement. There are two mass balances extending forward of each spring-tab leading edge. Each mass balance assembly consists of two weights bolted together and secured to the arm with two bolts.
Flight Safety Foundation. In: Aviation Mechanics Bulletin (adapted).
Based on the text, judge the item below.
A survey undertaken after the accident found out that one of the balance weights was left out.
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Acerca de medidores elétricos, julgue o item a seguir.
O multimedidor é uma combinação de voltímetro e amperímetro que pode ser utilizado para medir tensões e correntes contínuas e alternadas. Esse equipamento também é denominado volt-ohm-miliamperímetro (VOM) ou analisador de circuitos.
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Com referência às técnicas utilizadas em ensaios não destrutivos, julgue o próximo item.
A técnica de líquido penetrante pode ser utilizada para avaliação da profundidade de trincas.
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Acerca do sistema elétrico de corrente alternada das aeronaves, julgue o item subsequente.
Os alternadores do tipo campo rotativo possuem um enrolamento induzido estacionário (estator) e um enrolamento de campo rotativo (rotor). O enrolamento induzido estacionário é ligado diretamente à carga.
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Acerca do sistema elétrico de corrente alternada das aeronaves, julgue o item subsequente.
A corrente de um alternador trifásico pode ser convertida em corrente contínua com a ajuda de uma ponte retificadora composta de 2 diodos de potência.
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No que tange à composição e às propriedades dos materiais utilizados na aviação, julgue o próximo item.
A esfoliação, o pitting e o par galvânico são exemplos de diferentes tipos de corrosão que podem ocorrer no alumínio.
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Acerca das reações aerodinâmicas que atuam em uma aeronave de asa fixa durante o voo, julgue o item subsequente.
Em um helicóptero que se desloca para frente, a diferença da velocidade do vento relativo na pá que avança em relação à pá que recua provoca a elevação da pá que avança e o abaixamento da pá que recua. Esse movimento é conhecido como batimento.
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This text refers to item
Balance weight was missing
A post-flight inspection revealed that half of one of the balance weights from the right elevator spring tab was missing, along with two nuts that secured the balance weight. The report said that the two bolts associated with the nuts had “migrated out of the remaining half weight and jammed on the top surface of the elevator”; as a result, the elevator spring tab was held in the trailing-edge-down position.
The report said that the Dash 8 pitch-control system comprises “two elevator-control-cable circuits, each operating an independently mounted, spring-tab-assisted elevator. Each elevator has a spring tab at the inboard end and a trim tab at the outboard end.
“The left elevator is actuated by the captain’s control column through the left cable-control circuit and the left elevator spring-tab system. The right elevator is actuated by the first officer’s control column through similar components.”
The two control columns normally are interconnected to allow for simultaneous movements of both elevators.
In the event that one of the controllable circuits jams, the control columns can be disconnected by the elevator-pitchdisconnect system to allow the unjammed circuit to operate normally.
Spring tabs provide ‘aerodynamic assistance’
The report said that the spring-tab system is “designed to provide aerodynamic assistance to elevator movement. There are two mass balances extending forward of each spring-tab leading edge. Each mass balance assembly consists of two weights bolted together and secured to the arm with two bolts.
Flight Safety Foundation. In: Aviation Mechanics Bulletin (adapted).
Based on the text, judge the item below.
The elevator spring tab was clutched in the training-edgedown position.
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