21.273—Airworthiness certificates other than experimental.
(a)
The manufacturer may issue an airworthiness certificate for aircraft manufactured under a delegation option authorization if he finds, on the basis of the inspection and production flight check, that each aircraft conforms to a type design for which he holds a type certificate and is in a condition for safe operation.
(b)
The manufacturer may authorize any employee to sign airworthiness certificates if that employee—
(1)
Performs, or is in direct charge of, the inspection specified in paragraph (a) of this section; and
(2)
Is listed on the manufacturer's application for the delegation option authorization, or on amendments thereof.