Commercial Pilot License (CPL) Practice Exam 2025 - Free Commercial Pilot License Practice Questions and Study Guide

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What constitutes preventive maintenance?

Major repairs and part replacements

Operations involving complex assembly

Simple or minor preservation operations

Preventive maintenance encompasses activities designed to preserve the condition and functionality of an aircraft. This involves performing simple or minor preservation operations that help avoid more significant repairs or issues later. Examples of preventive maintenance include changing filters, lubricating moving parts, and checking fluid levels. These tasks are typically easy to perform and can be handled by the pilot or a certified technician.

The focus is on maintaining aircraft performance and safety through these manageable tasks. The other options refer to activities that are either beyond the scope of routine preventive maintenance or involve complex processes that require specialized knowledge and skills, which are typically associated with more extensive repairs or overhauls rather than basic preservation work.

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Complete overhauls of aircraft systems

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