| 1. | The risk of not changing out the power control unit is severe.
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| 2. | The backup power control unit is operated by rudder pedals alone.
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| 3. | That case also called for replacement of the main rudder power control unit.
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| 4. | _Installation of improved fasteners that attach a control rod to the power control unit.
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| 5. | Mechanics later removed and replaced the main rudder power control unit on the jet.
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| 6. | -- Space Walk 3 ( Day 6 ) : Replace the Power Control Unit.
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| 7. | Parker is the manufacturer of the rudder power control unit.
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| 8. | The main power control unit is operated by rudder pedals and the yaw damper.
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| 9. | NASA said it had little choice but to replace Hubble's original power control unit.
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| 10. | The rudder power control unit is similar to a power steering unit in a car.
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