Preventive maintenance refers to the simple or minor preservative operations, as well as the replacement of small standard parts. These tasks do not involve complex assembly operations and are listed in 14 CFR part 43, appendix A. Certified pilots are allowed to perform preventive maintenance on any aircraft they own or operate, as long as it is not used in air carrier service. The purpose of preventive maintenance is to ensure that the aircraft is in good working order and reduces the likelihood of more serious problems arising in the future. This type of maintenance is essential for the safe operation of the aircraft and helps to extend its lifespan. Preventive maintenance tasks may include cleaning, checking fluid levels, replacing worn or damaged parts, and conducting routine inspections. The frequency and extent of the maintenance required will depend on the age, usage, and condition of the aircraft, as well as the manufacturer’s recommendations.
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