The first officers control wheel is connected by cables to the

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BlackTom AI · Accepted Answer

Question restatement: The first officer's control wheel is connected by cables to the following components, among the listed options.

Option 1: 'Rudder power control unit' — This is not correct because the control wheel typically engages roll and yaw control surfaces through a different path, and the rudder power control unit is associated with the rudder pedals and rudder command rather than the primary wheel's mechanical linkage.

Option 2: 'Spoiler PCUs via the spoiler mixer' — This is the statement that aligns with the standard wiring and mechanical arrangement on many fly-by-wire or managed aircraft setups, where the wheel movement can influence spoiler actuation through spoiler power control units (PCUs) routed through the spoiler mixer, coordinating and distributing control signals appropriately. The phrase indicates a path from wheel input to the spoiler PCUs via the mixer, which matches how inputs can be routed to multiple actuators through a mixer to achieve coordinated control.

Option 3: 'Spoiler mixer' — While a spoiler mixer exists as a subsystem that combines and distributes spoiler inputs, this option suggests a direct connection to the mixer alone, omitting the PCUs. In practice, the wheel’s input is not connected only to the mixer, but rather to the PCUs through the mixer; thus this option is incomplete or overly simplistic about the signal path.

Option 4: 'Aileron power control unit' — This is not consistent with the question's phrasing that emphasizes the first officer’s control wheel connection to spoilers via PCUs, whereas the aileron PCU handles roll surfaces (ailerons) and is typically driven by a different control path. Therefore this option misidentifies the primary actuator pathway associated with the wheel input in this context.

In summary, the most accurate depiction among the choices describes the wheel inputs being transmitted to the spoiler actuation system through the spoiler PCUs via the spoiler mixer, reflecting the integrated control architecture that handles spoiler deployment and coordination with other surfaces. The other options either reference incorrect components for this specific signal path or omit essential elements of the pathway, leading to inaccuracies about how the first officer's control wheel drives spoiler actuation.

AS 411 Lesson 13 Quiz

The first officers control wheel is connected by cables to the

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