Since airworthiness control of aircraft was one of the earliest and most basic functions of the civil aviation regulator, one of the first forms developed by the fledgling Department was the Certificate of Airworthiness (CofA). This version of Form CA 14A is the 1975 amendment.

The CofA basically establishes that at the time of manufacture or import an aircraft meets the required standard of design and construction. Note item 5 on the CofA which stipulates that the aircraft is only considered to be airworthy when maintained and operated in accordance with the relevant regulations and operating limits. Airworthiness approval is given for operation in a particular category, which defines what the aircraft can be used for. In this case, certification is in the Transport category, which enables the aircraft to be used for all commercial transport purposes.