Type certification approves an aircraft design; production certification approves the system used to manufacture conforming aircraft. FAA §21.123 generally sets a six-month timeframe after type certification, subject to exceptions and authorization mechanisms.
3 — distinct approval scopes discussed: type design, production system and individual-aircraft airworthiness 6 months — general §21.123 timeframe for obtaining a Production Certificate after a Type Certificate, subject to the rule's exceptions and FAA authorization mechanisms
A Type Certificate approves the aircraft design; a Production Certificate approves the production system. They are distinct approvals, and individual aircraft also need appropriate airworthiness authorization.
Whether manufacturers mature supplier control, tooling, inspection, configuration management and quality systems in parallel with type certification so production approval does not become the next bottleneck.
Aircraft certification is easier to read when three approvals are kept separate: the design, the production system and the individual aircraft. A Type Certificate addresses the first. A Production Certificate addresses the second. An airworthiness certificate addresses the third. A headline saying an aircraft is “certified” may refer to only one of them.
Under 14 CFR Part 21, a Type Certificate establishes that the approved type design complies with its applicable certification basis. The applicant substantiates the design through analysis, inspection and testing using agreed means of compliance. For powered-lift aircraft, the certification basis can include aircraft-specific airworthiness criteria because the architecture does not map cleanly onto legacy airplane or rotorcraft rules.
A Type Certificate therefore says something specific and important: the approved design has met its applicable requirements. It does not, by itself, establish that a manufacturer has an approved production quality system for serial output.
A Production Certificate under Part 21 Subpart G approves the production system used to manufacture products conforming to an approved design. The quality system covers areas such as configuration and document control, supplier control, inspection, nonconforming material, corrective action and production records.
The regulatory distinction matters because conformity has to survive scale. A prototype built under intensive engineering supervision is not evidence that dozens or hundreds of aircraft can be produced with the same controlled characteristics.
14 CFR §21.123 generally requires a holder producing under a Type Certificate to obtain a Production Certificate within six months after issuance of the Type Certificate, but the rule contains exceptions and FAA authorization mechanisms. It is therefore too strong to describe six months as an absolute point at which all legal manufacturing authority automatically disappears.
The practical implication remains important: production approval cannot sensibly be treated as work that starts after type certification. Manufacturing processes, supplier controls, tooling, inspection and quality records need to mature in parallel with the design-certification program if a developer expects to transition rapidly into serial production.
An individual aircraft also needs the appropriate airworthiness authorization for its intended operation. A Special Airworthiness Certificate used for flight testing is not evidence that the type design has received a standard Type Certificate, nor that the manufacturer holds a Production Certificate. Keeping those scopes separate prevents test-aircraft announcements from being mistaken for commercial-production approval.
EASA Part 21 uses a comparable conceptual split through design approvals and Production Organisation Approval. The mechanics and terminology differ from the FAA system, so the two regimes should not be treated as interchangeable, but both require control of the approved design and of the organization producing conforming hardware.
For eVTOL programs approaching type certification, the evidence to watch is therefore broader than flight-test progress: production-system approvals, conformity processes, supplier qualification and the ability to preserve the certified configuration at rate are part of the path from approved design to deliverable aircraft.
