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Questions and Answers
What is the maximum permissible free-play measurement at the trim tab trailing edge?
What is the maximum permissible free-play measurement at the trim tab trailing edge?
What should be checked if the trim tab free-play exceeds 112 inches?
What should be checked if the trim tab free-play exceeds 112 inches?
What is the first step to inspect trim tab free-play?
What is the first step to inspect trim tab free-play?
If looseness is found in the actuator assembly threaded rod end, what should be done?
If looseness is found in the actuator assembly threaded rod end, what should be done?
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What action should be taken if a push-pull tube connection shows looseness during inspection?
What action should be taken if a push-pull tube connection shows looseness during inspection?
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Study Notes
Trim Tab Free-Play Inspection
- Begin by positioning both the elevators and the trim tab in their neutral positions.
- Manually move the trim tab trailing edge up and down using moderate pressure to assess free-play.
- The maximum permissible free-play measured at the trim tab trailing edge is 112".
- A system with less than 112" of free-play is within acceptable limits.
- If the free-play exceeds 112", inspect the following components for looseness while manually manipulating the trim tab:
- The push-pull tube to trim tab horn assembly attachment.
- The push-pull tube to actuator assembly threaded rod end attachment.
- The actuator assembly threaded rod end for movement within the actuator assembly.
- If looseness is found in either the push-pull tube to trim tab horn assembly attachment or the push-pull tube to actuator assembly threaded rod end attachment, replace the affected components.
- If looseness is discovered in the actuator assembly threaded rod end movement, consult sections 9-6 through 9-7C for resolution.
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Description
This quiz focuses on the inspection process for trim tab free-play in aviation. It covers the correct positioning of elevators and trim tabs, permissible free-play limits, and the inspection protocol for components related to the trim tab mechanism. Ensure you understand the criteria for acceptable free-play to maintain safe aircraft operations.
