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1.2.3  Application form
A formal application for a Type Certificate should be submitted in a form and manner prescribed by the CAA and submitted to the ACD. Information should be provided as follows:
a)  for an application for an aircraft Type Certificate, a three-view drawing of that aircraft
and preliminary basic data, including the proposed operating characteristics and
limitations;
b)  for an application for an engine or propeller Type Certificate, a general arrangement
drawing, a description of the design features, the operating characteristics, and the
proposed operating limitations of the engine or propeller;
c)  a statement identifying the airworthiness Standards to which the aircraft, engine or propeller is designed and intended to show compliance with; and
d)  an indication from the applicant on the need for concurrent or subsequent type certification in another State or States.
1.2.4  Validity period of an application
An application for a Type Certificate is normally subjected to a validity period prescribed by the CAA, within which the type certification process should be completed. The validity period starts from the date of application up to a pre-determined number of years, the exact number being commensurate to the complexity of the review and approval of the type design of the aeronautical product. For example, many States have a validity period of five years when certifying large transport aircraft, and three years when certifying an engine or propeller. In cases where an applicant can show that his product requires a longer period of time for design, development, and testing, the CAA can approve a longer validity period. Or if during the type certification process, the CAA believes that the Type Certificate will not be issued by the end of the validity period, the applicant should be requested to submit a new application or apply for an extension of the validity period. As a consequence of any extension granted to an applicant, the certification basis should be reviewed again for currency or validity. The CAA and applicant should jointly review the potential impact or consequence of their extended validity period when requesting foreign validation of their Type Certificate.
1.2.5  Management of the application
An application is considered outstanding or open until a Type Certificate is finally issued, or denied by the CAA. Given that an application has to be completed within the validity period established in 1.2.4, the CAA needs to convene a certification team that will administer the type certification process and manage the actual certification activities involved in each application. For a State of Design, this team is commonly referred to as the Type Certification Board (TCB). For a State of Registry, this team is commonly referred to as the Validation Team. The functions of both teams are the same, i.e., to process an application for a Type Certificate and provide a recommendation to the CAA. However, the activities of the Validation Team are expected to be limited in scope and depth, giving due recognition to the work being performed, or already done, by the authority of the State of Design.
1.2.5.1  Type certification board
Type certification boards are normally established for all aircraft and engine projects in which a complete type certification is involved. These may also be established for propellers, when considered necessary, and for projects involving complex changes to the type design. The purposes of a TCB are to acquaint the applicant and the ACD with the specific certification project, resolve significant problems, establish milestones and schedules for the overall accomplishment of the type certification programme, review the applicant’s certification plan, review the proposed certification basis, and assure all outstanding certification issues are resolved. Clear expectations from, and assignments for, the applicant and ACD are established by the TCB. It is also the TCB that submits the final recommendation to the DCA for the issuance or denial of a Type Certificate.
　
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