Preventive maintenance


Simple or minor preservative operations and the replacement of small standard parts not involving complex assembly operation as listed in 14 CFR part 43, appendix A. Certificated pilots may perform preventive maintenance on any aircraft that is owned or operated by them provided that the aircraft is not used in air carrier service.

Source: 14 CFR Federal Aviation Regulations §1, 14 CFR Federal Aviation Regulations §43, Pilot Handbook of Aeronatical Knowledge