***Link*** :: [§ 91.203 Civil aircraft: Certifications required.](https://www.ecfr.gov/current/title-14/section-91.203) ***Description*** :: `= this.link` ***Author*** :: [[FAA]] ***Key Quotes***: * no person may operate a civil aircraft unless it has within it the following: * An appropriate and current airworthiness certificate... * An effective U.S. registration certificate... * airworthiness certificate... is displayed at the cabin or cockpit entrance so that it is legible to passengers or crew. #source #far