The Airworthiness Certificate remains valid as long as the aircraft is maintained and operated in accordance with which regulations?

• A. Federal Aviation Regulations
• B. Local zoning ordinances
• C. Manufacturer recommendations only
• D. Air shows rules

Answer: (A)

The key idea is that airworthiness is defined by complying with Federal Aviation Regulations. The Airworthiness Certificate stays valid as long as the aircraft is maintained and operated under those regulations, which cover required inspections, maintenance practices, recordkeeping, modifications, and how the aircraft must be flown. Local zoning rules or rules for air shows don’t determine airworthiness, and following manufacturer recommendations alone isn’t enough if those recommendations aren’t aligned with the FARs and any applicable airworthiness directives. In short, staying within the Federal Aviation Regulations keeps the certificate valid.