The following is a quote from FAR 43, Appendix A.
Refering to items listed that are classified as preventative maintenance performed by owner pilots:
"They are performed by at least the holder of a private pilot certificate issued under Part 61 who is the registered owner (including co-owners) of the affected aircraft and who holds a certificate of competency for the affected aircraft (1) issued by a school approved under section 147.21 (e) of this chapter, (2) issued by the holder of the production certificate for that primary category aircraft that has a special training program approved under Sec. 21.24 of this subchapter, or (3) issued by another entity that has a course approved by the Adminstrator."
OK, what does this mean? I need another piece of paper (certificate of competency for the C-170) before I can change my own oil? This isn't new, Part 43 was last updated 5/31/96

Since we all know George Horn stays up late nights studying the FARs, maybe he can explain exactly what the requirements are for owner performed maintenance. Does anyone know? Russ Farris