***Link*** :: [§ 91.407 Operation after maintenance, preventive maintenance, rebuilding, or alteration.](https://www.ecfr.gov/current/title-14/section-91.407) ***Description*** :: `= this.link` ***Author*** :: [[FAA]] #### Key Quotes * No person may operate any aircraft that has undergone maintenance, preventive maintenance, rebuilding, or alteration unless— * It has been approved for [[RTS|return to service]] by a person authorized under § [[FAR 43.7 Persons Authorized to RTS|43.7]] of this chapter; and * The maintenance record entry required by § [[FAR 43.9 Maintenance Records|43.9]] or § [[FAR 43.11|43.11]], as applicable, of this chapter has been made. * No person may... in an aircraft that has been maintained, rebuilt, or altered in a manner that may have appreciably changed its flight characteristics or substantially affected its operation in flight until... at least a private pilot certificate flies the aircraft, makes an operational check..., and logs the flight in the aircraft records. #source #far